Ravangard, Akbar, Zargaran, Mohammad Reza, Eshaghi Rad, Javad. “Study of species diversity and richness indices of <Populus nigra> pests in West Azerbaijan province.” Journal of  Renewable Natural Resources Research, vol. 12, no. 2, 2022, pp. 61-72. 10.30495/jrnr.2022.64762.10223