@article{MO_2005_4_a3,
     author = {V. V. Vavilov},
     title = {Kaleidoscope of {Problems}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {65--76},
     year = {2005},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2005_4_a3/}
}