List of Articles fuzzy planning Open Access Article Abstract Page Full-Text 1 - Optimizing the investment portfolio using the Markowitz model and fuzzy multi-objective programming (case study: Tehran Stock Exchange) Shadi Kanaani Mahdi Yousefi Nejad Attari Zohreh Khalilpourshiraz Open Access Article Abstract Page Full-Text 2 - Modeling and solving multi-skilled resource-constrained project scheduling problem with calendars in fuzzy condition Sama Ahmadpour Vahidreza Ghezavati