Nunes, Paulo Maçãs, Sílvia Mendes, and Zélia Serrasqueiro. “SMEs’ Investment Determinants: Empirical Evidence Using Quantile Approach”. Journal of Business Economics and Management 13, no. 5 (October 4, 2012): 866-894. Accessed February 23, 2025. https://btp.vilniustech.lt/index.php/JBEM/article/view/4433.