TY  - BOOK
AU  - Nastasescu C.
AU  -  Oystaeyen F Van
AU  -  Vanoystaeyen F
TI  - Graded Ring Theory
T2  - North-Holland mathematical library; 28
U1  - B239MR, M2;1 
PY  - 1982///
CY  - Amsterdam
PB  - North-Holland         
N1  - Bibliography 328-35p
ER  -