@article{AL_2006_45_3_a1,
     author = {A. A. Stepanova},
     title = {Primitive {Connected} and {Additive} {Theories} of {Polygons}},
     journal = {Algebra i logika},
     pages = {300--313},
     publisher = {mathdoc},
     volume = {45},
     number = {3},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2006_45_3_a1/}
}