@article{MZM_1997_61_2_a5,
     author = {N. A. Nemirovskaya},
     title = {Frucht theorem for inverse semigroups},
     journal = {Matemati\v{c}eskie zametki},
     pages = {246--251},
     publisher = {mathdoc},
     volume = {61},
     number = {2},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1997_61_2_a5/}
}