Kaakinen, A.

Jokela, T.; Eronen, J.; Kaakinen, A.; Liu, Liping; Passey, B.H.; Zhang Zhao-Qun; Fu Mingkai 2005. Translation of Otto Zdansky: The localities of the Hipparion Fauna of Baode County in Northwest Shanxi (1923). Palaeontologia Electronica 8 (1); 3A: 10 pp, 10 figs. http://palaeo-electronica.org/paleo/2005_1/jokela3/issue1_05.htm

Zhang Zhao-Qun; Gentry, A.W.; Kaakinen, A.; Liu, L.P.; Lunkka, J.P.; Qiu, Z.D.; Sen, S.; Scott, R.S.; Werdelin, L.; Zheng, S.H.; Fortelius, M. 2002. Land mammal faunal sequence of the late miocene of China: new evidence from Lantian, Shaanxi Province. Vertebrata PalAsiatica 40 (3): 165-176, figs. 1-2.