List of Articles Petersen Open Access Article Abstract Page Full-Text 1 - Silver coloring of generalized Petersen graphs Nazli Besharati Open Access Article Abstract Page Full-Text 2 - Many algorithms for approximation of restrained 2-rainbow domination in GP(n,5) Mojtaba Ghanbari Open Access Article Abstract Page Full-Text 3 - Upper bounds for 2-restrained domination number of GP(n,2) Mojtaba Ghanbari Mehdi Jalinoosi Open Access Article Abstract Page Full-Text 4 - Determining the Efficiency of Iran’s Provinces in Onion Production: Application of Data Envelopment Analysis علی Shahnavazi