List of Articles InvDEA Open Access Article Abstract Page Full-Text 1 - Combination of Data Envelopment Analysis and Non-Linear Programming: A Novel Hybrid for Optimizing the Allocation of the Fixed-Cost in the Project Portfolio Farhad Khazaeli Hosein Arman Mohammadreza Zare Open Access Article Abstract Page Full-Text 2 - Using Multi-Objective Linear Programming (MOLP) and Data Envelopment Analysis (DEA) models in Non-discretionary Performance Measurement Sahar Khoshfetrat Mojtaba Ghiyasi