%0 Journal Article %A L. I. Chibrikova %T Solution of the Riemann boundary-value problem for automorphic functions for groups characterised by two invariants %J Doklady Akademii Nauk %D 1961 %P 47-50 %V 141 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_141_1_a11/ %G ru %F DAN_1961_141_1_a11