@article{IVM_1968_3_a4,
     author = {Kh. M. Devadze},
     title = {Order-defining relations in the ordered semigroup of all binary relations in a~finite set},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {28--36},
     publisher = {mathdoc},
     number = {3},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1968_3_a4/}
}