@article{MM_1990_2_5_a4,
     author = {Yu. S. Popkov and V. I. Shvetsov},
     title = {Local equilibria principle in regional dynamics models},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {40--59},
     publisher = {mathdoc},
     volume = {2},
     number = {5},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_1990_2_5_a4/}
}