TY - BOOK AU - Borho,W. AU - Brylinski,J.L. AU - MacPherson,R. TI - Nilpotentorbits, primitive ideals, and characteristic classes : a geometric perspective in ring theory SN - 0817634738 U1 - 512.55 PY - 1989/// CY - Boston PB - Birkhauser KW - MATHEMATICS KW - RING THEORY ER -