On Rough Equalities and Rough Equivalences of Sets. - Bala Krushna Tripathy; Anirban Mitra; Jaladhar Ojha (RSCTC, 2008)

Rough equivalence and algebraic properties of rough sets. - B. K. Tripathy 001; Anirban Mitra; Jaladhar Ojha (Int. J. Artif. Intell. Soft Comput., 2009)