%0 Journal Article %A Zh.-G. Wang %A D.-Zh. Chen %T On subclasses of close-to-convex and quasi-convex functions with respect to $2k$-symmetric conjugate points %J Lobachevskii journal of mathematics %D 2007 %P 125-135 %V 26 %I mathdoc %U http://geodesic.mathdoc.fr/item/LJM_2007_26_a11/ %G en %F LJM_2007_26_a11