1. 作者：S. Nazmul and S. K. Samanta,
标题:Soft topological groups,
来源：Kochi J. Math. 5 (2010). 151-161
2.
作者：Ge Xun, Li Zhaowen, Ge Ying,
标题：Topological spaces and soft sets,
来源：Journal of Computational Analysis and Applications, 2011, 13, 5, 881-885