TY - BOOK AU - Janenko N N TI - Zwischenschritt methode zur losung mehrdimensionaler probleme der mathematischen physik U1 - 530.15=3 PY - 1969/// CY - Berlin PB - Springer-Verlag KW - Mathematical physics N1 - English ed. under the title `Method of fractional steps' by N N Yanenko ER -