@article{DE_1996_32_11_a2,
     author = {I. K. Volkov and A. P. Krishchenko},
     title = {Qualitative analysis of a population development model},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1457--1465},
     publisher = {mathdoc},
     volume = {32},
     number = {11},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1996_32_11_a2/}
}