@article{MV_1977_29_1_a2,
     author = {D. N. Krgovi\'c},
     title = {On $(m,n)_{T}$ ideals and subgroups of a semigroup},
     journal = {Matemati\v{c}ki vesnik},
     pages = {29 },
     year = {1977},
     volume = {29},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/MV_1977_29_1_a2/}
}