1. Dikov N.N. 1968 The discovery of the Paleolithic in Kamchatka and the problem of the initialoccupation of America. Arctic Anthropology, 5, 1: 19– 203
2. Wang Jian , Xiang-Qian Wang , & Zhe-Ying Chen 1978 Xiachuan Culture. Kaogu Xuebao (Chinese Journal of Archaeology) 3: 259–288
3. Kobayashi T. 1970 Microblade industries in the Japanese archipelago. Arctic Anthropology, 7: 38–58
4. Giddings J.L. 1967 Ancient men of the Arctic. New York: Alfred knof
5. Keally C.T. 1990 Hokkaido Pleistocene Archaeology and the Earliest Americans: Some Comments. Current Research in the Pleistocene (University of Maine,Orono), 7: 143–146