@article{SF_1985__31_134758, author = {M.K. Sen}, title = {On *-pseudo ideal of a semigroup with involution.}, journal = {Semigroup forum}, pages = {353--360}, publisher = {mathdoc}, volume = {31}, year = {1985}, zbl = {0565.20045}, url = {http://geodesic.mathdoc.fr/item/SF_1985__31_134758/} }