TY - JOUR AU - Bahreini Zarj, Mohammad Ali AU - Mobini Dehkordi, Ali AU - Heirati, Nima AU - Meigounpoory, Mohammad Reza TI - The evolution of incumbents’ role during new nanotechnology based firms’ collaboration within new product development JO - Modiriat-e- farda VL - 17 IS - 55 SP - 0 EP - 0 PY - 2018 DO - ER -