Παπακωνσταντίνου Α. and Φουσέκης Π. (2001) “Substitution and expansion effects in Greek agriculture: analysis with a non-parametric approach”, SPOUDAI Journal of Economics and Business, 51(3-4), pp. 76–89. Available at: https://spoudai.org/index.php/journal/article/view/491 (Accessed: 22 November 2024).