@article{NSJOM_1979_9_Nonea_21,
     author = {Crvenkovi\'c Sini\v{s}a},
     title = {On some 

 properties of a class of completely regular semigroups},
     journal = {Novi Sad Journal of Mathematics},
     pages = {153-160},
     publisher = {mathdoc},
     volume = {9},
     year = {1979},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1979_9_Nonea_21/}
}