Xiawen, Y. Julkaisussa China Sport Science and Technology (1989)
Du, W.-G., Yao, W.-G., Wang, X.-D. Julkaisussa Journal of Beijing Sport University (2008)
Yang, C.-H., Wang, B.-H., Zhang, L.-T., Liu, G.-B., Liu, S.-M., Guo, J.-L., Zhang, H.-Q. Julkaisussa China Winter Sports (2009)
Xiao, N.-N., Gao, J. Julkaisussa China Winter Sports (2009)