%0 Journal Article %A A. V. Abramyan %A V. S. Pilidi %T Criterion of uniform invertibility of regular approximations of one-dimensional singular integral operators on a piecewise-Lyapunov contour %J Vladikavkazskij matematičeskij žurnal %D 2019 %P 5-15 %V 21 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMJ_2019_21_1_a0/ %G ru %F VMJ_2019_21_1_a0