@article{VVGUM_2015_2_a4,
     author = {A. D. Vedenyapin and S. A. Mitasov},
     title = {The problem of finding the optimal number of countries in a limited area},
     journal = {Matemati\v{c}eska\^a fizika i kompʹ\^uternoe modelirovanie},
     pages = {40--48},
     publisher = {mathdoc},
     number = {2},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VVGUM_2015_2_a4/}
}