TY - BOOK AU - Janben R Ed. ED - International symposium on tends in computer algebra (1987 : Bad Neuenahr) TI - Proceedings on trends in computer algebra T2 - Lecture notes in computer science; 296 U1 - D65,8(B2)p1,N87, M8 PY - 1988/// CY - Berlin PB - Springer-Verlag KW - Computer science ER -