@article{SF_1980__20_134413,
     author = {A.V. Tishchenko},
     title = {The finiteness of a base of indentities for fiveelement monoids},
     journal = {Semigroup forum},
     pages = {171--186},
     publisher = {mathdoc},
     volume = {20},
     year = {1980},
     zbl = {0439.20036},
     url = {http://geodesic.mathdoc.fr/item/SF_1980__20_134413/}
}