Zacharias, Eleftherios (2009): Firm entry, product repositioning and welfare. Unpublished.
Andrikopoulos, Athanasios and Zacharias, Eleftherios (2008): General solutions for choice sets: The Generalized Optimal-Choice Axiom set. Unpublished.
Martzoukos, Spiros H and Zacharias, Eleftherios (2008): Real Option Games with R&D and Learning Spillovers. Unpublished.
