@article{VUU_2008_3_a13,
     author = {A. Yu. Perevarukha},
     title = {Cyclical fluctuations and step-wise changes in new models of population dynamic},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {116--125},
     publisher = {mathdoc},
     number = {3},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VUU_2008_3_a13/}
}