%0 Journal Article
%A E. I. Zverovich
%A L. I. Pomerantseva
%T The Riemann problem for n pairs of functions with matrices of permutation type
%J Doklady Akademii Nauk
%D 1974
%P 20-23
%V 217
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1974_217_1_a3/
%G ru
%F DAN_1974_217_1_a3