TY  - JOUR
AU  - A. V. Tsiganov
TI  - Comments on P.\,E.~Ryabov ``Explicit integration and topology of D.\,N.~Goryachev case''
JO  - Russian journal of nonlinear dynamics
PY  - 2011
SP  - 715
EP  - 717
VL  - 7
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ND_2011_7_3_a19/
LA  - ru
ID  - ND_2011_7_3_a19
ER  -