@article{IVM_1965_6_a21,
     author = {L. N. Shevrin},
     title = {Strong bands of semi-groups},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {156--165},
     publisher = {mathdoc},
     number = {6},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1965_6_a21/}
}