Wang, Xiaojuan, Hongping Liu, Lichun Huang, Shuzhen Zhang, Zhigang Deng, Jing Li, and Liang Jin. 2012. “Biodiversity of Wild Alfalfa Pollinators and Their Temporal Foraging Characters in Hexi Corridor, Northwest China”. Entomologica Fennica 23 (1):4-12. https://doi.org/10.33338/ef.84561.