1. A.S.Manjunath and S.J.John , On Bag Relations,Bulletin of Kerala Mathematics Association, 3 (2006), 15–22.
2. B.C. Tripathy ,G.C.Ray , On mixed fuzzy topological spaces and countability, Soft Comput, 16(10) (2012), 1691–1695.
3. C. L. Chang, Fuzzy topological spaces, J. Math. Anal. Appl., 24 (1968), 182–190.
4. D.Singh and A.M. Ibrahim, Complementation in Multiset Theory, International Mathematical Forum, 6(38) (2011), 1877–1884.
5. D.Singh,A.M. Ibrahim , T.Yohanna and J.N.Singh, A Systematization of Fundamentals of Multisets, Lecturas Mathematicas, 29 (2008), 33–48.