Sardo, F., Serrasqueiro, Z., Alves, H. On the relationship between intellectual capital and financial performance: A panel data analysis on SME hotels (2018) International Journal of Hospitality Management, 75, pp. 67-74.

Braga, A., Marques, C.S., Serrasqueiro, Z. Internationalisation Strategy of Knowledge-Intensive Business Services (2018) Journal of the Knowledge Economy, 9 (2), pp. 359-377.

Serrasqueiro, Z., Leitão, J., Smallbone, D. Small- and medium-sized enterprises (SME) growth and financing sources: Before and after the financial crisis (2018) Journal of Management and Organization, pp. 1-16. Article in Press.

Matias, F., Serrasqueiro, Z. Are there reliable determinant factors of capital structure decisions? Empirical study of SMEs in different regions of Portugal (2017) Research in International Business and Finance, 40, pp. 19-33.

Serrasqueiro, Z. Investment determinants: High-investment versus low-investment portuguese SMEs (2017) Investment Analysts Journal, 46 (1), pp. 1-16.

Sardo, F., Serrasqueiro, Z. Intellectual capital and financial performance considering the crisis period: A European empirical study (2017) Proceedings of the European Conference on Intellectual Capital, 2017-April, pp. 279-287.

Sardo, F., Serrasqueiro, Z. A European empirical study of the relationship between firms’ intellectual capital, financial performance and market value (2017) Journal of Intellectual Capital, 18 (4), pp. 771-788.

Sardo, F., Serrasqueiro, Z. Does dynamic trade-off theory explain Portuguese SME capital structure decisions? (2017) Journal of Small Business and Enterprise Development, 24 (3), pp. 485-502.

Sardo, F., Serrasqueiro, Z. Financial performance and intellectual capital: An empirical analysis in the context of the Euronext market countries (2017) Progress in Economics Research, 37, pp. 103-117.

Maçãs Nunes, P., Serrasqueiro, Z. Short-term debt and longterm debt determinants in small and medium-sized hospitality firms (2017) Tourism Economics, 23 (3), pp. 543-560.

Braga, A.M., Marques, C.S., Serrasqueiro, Z.M. KIBS' key dimensions: A qualitative study on innovation, knowledge, networks, location and internationalisation (2017) International Journal of Entrepreneurship and Small Business, 32 (3), pp. 364-385.

Nunes, P.M., Serrasqueiro, Z., de Matos, A.F. Determinants of investment in fixed assets and in intangible assets for high-tech firms (2017) Journal of International Studies, 10 (1), pp. 173-179.

Serrasqueiro, Z., Nunes, P.M., da Silva, J.V. The Influence of Age and Size on Family-Owned Firms' Financing Decisions: Empirical Evidence Using Panel Data (2016) . Article in Press.

Serrasqueiro, Z., Nunes, P.M., da Rocha Armada, M. Capital structure decisions: old issues, new insights from high-tech small- and medium-sized enterprises (2016) 22 (1), pp. 59-79.

Nunes, P.M., Serrasqueiro, Z. Profitability determinants of Portuguese knowledge-intensive business services: empirical evidence using panel data models (2015) 22 (1), pp. 51-56.

Serrasqueiro, Z., Caetano, A. Trade-Off Theory versus Pecking Order Theory: capital structure decisions in a peripheral region of Portugal (2015) 16 (2), pp. 445-466.

Serrasqueiro, Z., Nunes, P.M. Financing behaviour of Portuguese SMEs in hotel industry (2014) 43, pp. 98-107.

Serrasqueiro, Z., Nunes, P.M., da Rocha Armada, M. Capital structure decisions: old issues, new insights from high-tech small- and medium-sized enterprises (2014) . Article in Press.

Nunes, P.M., Serrasqueiro, Z., De Carvalho, P.G. Investment determinants of fitness SMEs in Portugal (2013) 19, pp. S496-S523.

Mendes, S., Serrasqueiro, Z., Nunes, P.M. Investment determinants of young and old Portuguese SMEs: A quantile approach (2014) 17 (4), pp. 279-291.

Nunes, P.M., Serrasqueiro, Z., Nunes, A., Mendes, L. The relationship between growth of companies and labour productivity in Portuguese SMES: A dynamic panel data approach (2013) 12 (3), pp. 20-39.

de Carvalho, P.G., Nunes, P.M., Serrasqueiro, Z. Growth determinants of small- and medium-sized fitness enterprises: Empirical evidence from Portugal (2013) 13 (4), pp. 428-449.

De Carvalho, P.G., Serrasqueiro, Z., Nunes, P.M. Profitability determinants of fitness SMEs: Empirical evidence from portugal using panel data (2013) 15 (34), pp. 417-430.

Nunes, P.M., Gonçalves, M., Serrasqueiro, Z. The influence of age on SMEs' growth determinants: Empirical evidence (2013) 40 (2), pp. 249-272.

Nunes, P.M., Serrasqueiro, Z., Leitão, J. Assessing the nonlinear nature of the effects of R&D intensity on growth of SMEs: A dynamic panel data approach (2013) 23 (1), pp. 97-128.

Serrasqueiro, Z., Mendes, S., Nunes, P.M., da Rocha Armada, M. Do the investment determinants of new SMEs differ from those of existing SMEs? Empirical evidence using panel data (2012) 76 (1), pp. 51-67.

Nunes, P.M., Mendes, S., Serrasqueiro, Z. SMEs' investment determinants: Empirical evidence using quantile approach (2012) 13 (5), pp. 866-894.

Nunes, P.M., Viveiros, A., Serrasqueiro, Z. Are the determinants of young SME profitability different? Empirical evidence using dynamic estimators (2012) 13 (3), pp. 443-470.

Serrasqueiro, Z., Nunes, P.M. Is Age a Determinant of SMEs' Financing Decisions? Empirical Evidence Using Panel Data Models (2012) 36 (4), pp. 627-654.

Nunes, P.M., Serrasqueiro, Z. Are young SMEs' survival determinants different? Empirical evidence using panel data (2012) 19 (9), pp. 849-855.

Serrasqueiro, Z., Nunes, P.M., da Silva, J.V. Are financing decisions of family-owned SMEs different? Empirical evidence using panel data (2012) 18 (3), pp. 363-382.

Nunes, P.M., Serrasqueiro, Z., Leitão, J. Is there a linear relationship between R&D intensity and growth? Empirical evidence of non-high-tech vs. high-tech SMEs (2012) 41 (1), pp. 36-53.

Serrasqueiro, Z. Profitability determinants: An empirical study of Portuguese SMES (2011) pp. 75-97.

Mendes, S., Nunes, P.M., Serrasqueiro, Z. Influence of the economic conjuncture on SME investment: Empirical evidence using dynamic panel estimators (2011) pp. 143-158.

Serrasqueiro, Z.S., Armada, M.R., Nunes, P.M. Pecking Order Theory versus Trade-Off Theory: Are service SMEs' capital structure decisions different? (2011) 5 (4), pp. 381-409.

Serrasqueiro, Z., Nunes, P.M., Leitão, J. Sources of finance for R&D investment: Empirical evidence from Portuguese SMEs using dynamic estimators (2011) 13 (2), pp. 191-210.

Serrasqueiro, Z., Nunes, P.M. The capital structure of portuguese SMEs: Empirical evidence using dynamic panel data (2011) 10 (1), pp. 62-80.

Serrasqueiro, Z. The influence of age and size on the relationships between debt and determinants: An empirical study on Portuguese SMEs (2011) 12 (2), pp. 139-157.

Serrasqueiro, Z. Profitability determinants: Differences between service and manufacturing Portuguese SMEs (2011) pp. 125-148.

Serrasqueiro, Z. Are capital structure decisions of service SMEs different? Empirical evidence from Portugal (2011) 34 (1), pp. 34-57.

Serrasqueiro, Z., Nunes, P.M. Non-linear relationships between growth opportunities and debt: Evidence from quoted Portuguese companies (2010) 63 (8), pp. 870-878.

Nunes, P.M., Serrasqueiro, Z.S., Leitão, J. Are there nonlinear relationships between the profitability of Portuguese service SME and its specific determinants? (2010) 30 (8), pp. 1313-1341.

Leitão, J., Serrasqueiro, Z., Nunes, P.M. Testing Gibrat's law for listed Portuguese companies: A quantile approach (2010) 37, pp. 147-158.

Serrasqueiro, Z., Nunes, P.M., Leitão, J., Armadaz, M. Are there non-linearities between SME growth and its determinants? A quantile approach (2010) 19 (4), art. no. dtp053, pp. 1071-1108.

Serrasqueiro, Z., Nunes, P.M., Leitao, J. Companies growth and labour productivity in SMEs: Empirical evidence (2009) (2), pp. 229-240.

Maçãs Nunes, P.J., Serrasqueiro, Z.M., Sequeira, T.N. Profitability in Portuguese service industries: A panel data approach (2009) 29 (5), pp. 693-707.

Serrasqueiro, Z. Growth and profitability in portuguese companies: A dynamic panel data approach [Creşterea şi profitabilitatea în cadrul companiilor portogheze: O abordare pe baza datelor selectate cu estimatori dinamici] (2009) 11 (26), pp. 565-573.

Nunes, P.J.M., Serrasqueiro, Z. Gibrat's law: Empirical test of Portuguese service industries using dynamic estimators (2009) 29 (2), pp. 219-233.

Serrasqueiro, Z., Nunes, P.M. SME'S growth: Empirical evidence using dynamic panel estimators (2008) (12), pp. 40-47.

Serrasqueiro, Z., Mendes, S., Nunes, P.M. Companies' investment determinants: Comparison of different panel data estimators (2008) 11 (4), pp. 475-493.

Serrasqueiro, Z.S., MaçÃs Nunes, P. Performance and size: Empirical evidence from Portuguese SMEs (2008) 31 (2), pp. 195-217.

Serrasqueiro, Z., Maçãs Nunes, P. Separation between management and ownership: Implications to financial performance (2008) 6 (1 A), pp. 16-21.

Serrasqueiro, Z., Nunes, P.M., Sequeira, S.T.N. Firms' growth opportunities and profitability: A nonlinear relationship (2007) 3 (6), pp. 373-379.

Nunes, P.M., Sequeira, T.N., Serrasqueiro, Z. Firms' leverage and labour productivity: A quantile approach in portuguese firms (2007) 39 (14), pp. 1783-1788.

Nunes, P.J.M., Serrasqueiro, Z.M. Capital structure of Portuguese service industries: A panel data analysis (2007) 27 (5), pp. 549-562.

Almeida, A., Serrasqueiro, Z., Rogeiro, A. Review of the utilization of a Portuguese public hospital [Protocolo de revisão de utilização de recursos num hospital público Português] (2006) 19 (5), pp. 381-385.

Maçãs, P., Serrasqueiro, Z., Saraiva, P. Consequences of corporate debt financing in price agreements' stability (2005) 53 (10), pp. 1038-1050.