%0 Journal Article %T G.\,B.~Jeffery and G.~Hamel. Brief biography %J Russian journal of nonlinear dynamics %D 2009 %P 135-136 %V 5 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/ND_2009_5_1_a13/ %G ru %F ND_2009_5_1_a13