@article{TIMM_2010_16_2_a12,
     author = {A. V. Lasunskii},
     title = {On cycles of a~discrete periodic logistic equation},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {154--157},
     year = {2010},
     volume = {16},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2010_16_2_a12/}
}