List of Articles Two-Stage Structure Open Access Article Abstract Page Full-Text 1 - Designing a Dynamic two-stage data envelopment analysis model to calculate partial and periodic efficiency Reza Soleymani-Damaneh Open Access Article Abstract Page Full-Text 2 - Malmquist Productivity Index under Network Structure and Negative Data: An Application to Banking Industry Seyed Ehsan Shojaie Seyed Jafar Sadjadi Reza Tavakkoli Moghaddam