%0 Journal Article %A A. B. Venkov %T Construction of ``Hauptfunktion'', solution of the equations of Schwarz and Puchs for a~surface of zero genus by the methods of spectral theory of automorphic functions %J Zapiski Nauchnykh Seminarov POMI %D 1984 %P 51-62 %V 133 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1984_133_a3/ %G ru %F ZNSL_1984_133_a3