List of Articles NP Problems Open Access Article Abstract Page Full-Text 1 - Expansions and algorithms of the fleet and mix vehicle routing problem Majid Yousefikhoshbakht Mohamadreza Chaharmahali 10.30495/jnrm.2023.56923.1994 Open Access Article Abstract Page Full-Text 2 - Designing a New Structure Based on Learning Automaton to Improve Evolutionary Algorithms (With Considering Some Case Study Problems) Ali Safari Mamaghani Kayvan Asghari Mohammad Reza Meybodi