TY - JOUR AU - A. Yu. Perevarukha TI - Cyclical fluctuations and step-wise changes in new models of population dynamic JO - Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki PY - 2008 SP - 116 EP - 125 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VUU_2008_3_a13/ LA - ru ID - VUU_2008_3_a13 ER -