Paket programm dl︠i︡a resheni︠i︡a dvukhtochechnykh kraevykh zadach : metod ortogonalʹnogo perenosa granichnykh usloviĭ - Gurʹ︠i︡anov, A. V. (Soobshcheni︠i︡a po programmnomu obespecheni︠i︡u., 1991)