TY - JOUR AU - pourmandbakhshayesh, tayyebeh AU - Salmani, Behzad AU - bargioskooi, mohammadmehdi TI - Effects of Technology Spillover and Internal Research & Development (R&D) on Growth of Total Factor Productivity (TFP) in Iran's Oil and Gas Sector JO - Roshd -e- Fanavari VL - 16 IS - 64 SP - 72 EP - 81 PY - 2020 DO - 10.52547/jstpi.20794.16.64.72 ER -