@article{MZM_1992_52_2_a18,
     author = {N. Kh. Kasymov},
     title = {The number of algebras over simple sets},
     journal = {Matemati\v{c}eskie zametki},
     pages = {150--152},
     publisher = {mathdoc},
     volume = {52},
     number = {2},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1992_52_2_a18/}
}