List of Articles Additive model Open Access Article Abstract Page Full-Text 1 - Measuring Inefficiency Slacks of Network Systems in the presence of Shared Resources Hossein Azizi Shahruz Fathi Ajirlu Open Access Article Abstract Page Full-Text 2 - Efficiency and Return to Scale of Two-Stage network in Data Envelopment Analysis Using Additive Model Mahboobeh Joghataie Farhad Hosseinzadeh lotfi Tofigh Allahviranloo Open Access Article Abstract Page Full-Text 3 - Ranking Efficient DMUs Using the Ideal point and Norms B. Shavazipour Open Access Article Abstract Page Full-Text 4 - Using MOLP based procedures to solve DEA problems P. Zamani F. Hosseinzadeh Lotfi Open Access Article Abstract Page Full-Text 5 - Predictability of Statistical models in the evaluate site productivity Fagus Orientalis Lipsky trees Somayeh Dehghaninezhad Seyed Jalil Alavi Seyed Mohsen Hosseini Open Access Article Abstract Page Full-Text 6 - A Bounded Additive Model for Efficiency Evaluation in Two-Stage Production Systems With Negative Data Hamidreza Babaei Asil Reza Kazemi Matin Mohsen Khounsiavash Zohreh Moghaddas Open Access Article Abstract Page Full-Text 7 - Effects of Topography and Soil Variables on Abundance of Onobrychis chorassanica Bunge. in Kardeh and Kurtian Rangelands, Mashhad, Iran Majid Dashti Hamidreza Mirdavoudi Alireza Ghasemi Arian Narjes Azizi