%0 Journal Article %A G. D. Stepanov %T Effective criteria for the~strong sign-regularity and the~oscillation property of the~Green's functions of two-point boundary-value problems %J Sbornik. Mathematics %D 1997 %P 1687-1728 %V 188 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1997_188_11_a4/ %G en %F SM_1997_188_11_a4