@article{MO_2007_0_a6,
     author = {N. N. Konstantinov},
     title = {Does a {Wind} from {Behind} {Trouble} {Birds?}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {29--31},
     year = {2007},
     number = {0},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2007_0_a6/}
}