TY - BOOK AU - Montgomery Susan TI - Hopf algebras and their actions on rings T2 - Conference Board of the mathematical Sciences, regional conference series in mathematics; 82 SN - 0821807382 (pbk) U1 - B26, N3 PY - 1993/// CY - Providence, Rhode Island PB - American Mathematical Soceity KW - Algebra KW - Hopf algebra KW - Mathematics N1 - Bibliographical reference 223-234p; Index 235-238p ER -