Mavrommati, A., F. Chatzitheodoridis, A. Pliakoura, and A. Kontogeorgos. “DEA-Based Malmquist Productivity Indexes for Assessing Greek Tourism Regions”. Scientific Annals of Economics and Business, vol. 71, no. 1, Dec. 2023, pp. 75-90, doi:10.47743/saeb-2024-0002.