TY - JOUR AU - Maveddaty, Mahdie AU - Torabi, Taghi AU - Mahmoodzade, Mahmood AU - Memarnejad, Abass TI - Evaluation of the impact of informal institutions on the creation of opportunistic entrepreneurship using the GMM method JO - Future study Management VL - 30 IS - 118 SP - 239 EP - 254 PY - 2019 DO - ER -