%0 Journal Article %A Alikhani-Koopaei, Aliasghar %T On extreme first return path derivatives %J Mathematica slovaca %D 2002 %P 19-29 %V 52 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MASLO_2002__52_1_a2/ %G en %F MASLO_2002__52_1_a2