@article{MZM_1970_7_5_a2,
     author = {E. S. Lyapin},
     title = {An infinite irreducible set of semigroup identities},
     journal = {Matemati\v{c}eskie zametki},
     pages = {545--549},
     publisher = {mathdoc},
     volume = {7},
     number = {5},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1970_7_5_a2/}
}