Dolgormaa, B, and B Munkhtsetseg. 2015. “Tetraneuraulmi Linnaeus, 1758 (Homoptera, Aphididae) on Elm (Ulmus pumila)as Its Primary Pest”. Mongolian Journal of Agricultural Sciences 15 (2):143-46. https://doi.org/10.5564/mjas.v15i2.562.