@article{MM_1993_5_11_a2,
     author = {A. I. Abakumov},
     title = {Populations optimal harvest (time continuous models)},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {41--52},
     publisher = {mathdoc},
     volume = {5},
     number = {11},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_1993_5_11_a2/}
}