TY - JOUR TI - G.\,B.~Jeffery and G.~Hamel. Brief biography JO - Russian journal of nonlinear dynamics PY - 2009 SP - 135 EP - 136 VL - 5 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ND_2009_5_1_a13/ LA - ru ID - ND_2009_5_1_a13 ER -