@article{MM_2002_14_3_a6,
     author = {V. G. Il'ichev and O. A. Il'icheva},
     title = {The analysis of competition models in constant and periodically changing environment},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {71--83},
     publisher = {mathdoc},
     volume = {14},
     number = {3},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_2002_14_3_a6/}
}