@article{AL_1994_33_1_a3,
     author = {N. Kh. Kasymov},
     title = {Algebras over negative equivalences},
     journal = {Algebra i logika},
     pages = {76--80},
     publisher = {mathdoc},
     volume = {33},
     number = {1},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1994_33_1_a3/}
}