@article{AL_2002_41_6_a4,
     author = {E. V. Ovchinnikova},
     title = {Complete {Classes} of {Regular} {Polygons} over {Monoids} of {Depth~2}},
     journal = {Algebra i logika},
     pages = {745--753},
     publisher = {mathdoc},
     volume = {41},
     number = {6},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2002_41_6_a4/}
}