Khac, H. N., Khac, H. N. and Anh, K. T. (2012) “Preliminary data on lansnails (Gastropoda) in Xom Du village, Xuan Son national park, Phu Tho province”, Academia Journal of Biology, 32(1), pp. 13–16. doi: 10.15625/0866-7160/v32n1.646.