%0 Journal Article %A A. V. Lapteva %A E. I. Yakovlev %T Index vector-function and minimal cycles %J Lobachevskii journal of mathematics %D 2006 %P 35-46 %V 22 %I mathdoc %U http://geodesic.mathdoc.fr/item/LJM_2006_22_a4/ %G en %F LJM_2006_22_a4