TY - JOUR AU - Fabiana Çullhaj AU - Anjeza Krakulli TI - Some characterizations of regularity and intra-regularity of $\Gamma$-semigroups by means of quasi-ideals JO - Novi Sad Journal of Mathematics PY - 2021 SP - 39 EP - 46 VL - 51 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.30755/NSJOM.10795/ DO - 10.30755/NSJOM.10795 ID - 10.30755/NSJOM.10795 ER -