Tsagaan, B., Ganbaatar, O., Darizav, T. and Byambaa, K. (2020) “Content and distribution of some chemical elements in the poplar leaves (Populus laurifolia) in Ulaanbaatar”, Proceedings of the Mongolian Academy of Sciences, 60(4), pp. 18–27. doi: 10.5564/pmas.v60i4.1502.