@article{SEMR_2012_9_a15,
     author = {O. G. Bagina},
     title = {Convex pentagons which tile the plane (types: 11112, 11122)},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {478--530},
     publisher = {mathdoc},
     volume = {9},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2012_9_a15/}
}