@article{AA_2012_24_3_a3,
     author = {A. Zhukova},
     title = {Morse index of a~cyclic {polygon.~II}},
     journal = {Algebra i analiz},
     pages = {128--147},
     publisher = {mathdoc},
     volume = {24},
     number = {3},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2012_24_3_a3/}
}