00286nam a2200109 a 450000500170000008200200001710000210003724500370005826000360009530000250013170000200015620251203090504.0  a512.24,bD, stu  aStuckrad, Jurgen  aBuchsbaum rings and applications  aNew York, Springer-Verlagc1986  a286pb3 fig., 22 cm.  aVogel, Wolfgang