@article{05931627, title = {A note on bi-contra-continuous maps.}, journal = {Divulgaciones Matem\'aticas}, volume = {16}, year = {2008}, pages = {249-258}, zbl = {1217.54017}, language = {en}, url = {http://dml.mathdoc.fr/item/05931627} }
Caldas, M.; Thivagar, M.Lellis; Rajeswari, R.Raja. A note on bi-contra-continuous maps.. Divulgaciones Matemáticas, Tome 16 (2008) pp. 249-258. http://gdmltest.u-ga.fr/item/05931627/