Απέργης Ν. Ε., Καρπέτης Χ., Κωτσιοπούλου Α., Μιτακίδου Ε., and Τσιακίρη Θ. “The Demand for Money in Greece: Evidence through a Shopping-Time Technology Model and Cointegration”. SPOUDAI Journal of Economics and Business, vol. 49, no. 1-4, Jan. 1999, pp. 33-45, https://spoudai.org/index.php/journal/article/view/518.