Abbasi Esfanjani, Hossein, Asadi Ghorbani, Ommolbanin. “The Role of Marketing in SMEs based in East Azarbaijan Province Science and Technology Park.”  Roshd -e- Fanavari, vol. 13, no. 52, 2017, pp. 58-66. 10.7508/jstpi.2017.04.008