@misc{MO_2006_38_3_a2,
     title = {Appendix. {S.~P.~Gur'ev}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {8--11},
     publisher = {mathdoc},
     volume = {38},
     number = {3},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2006_38_3_a2/}
}