10.1090/s0002-9939-96-03381-3
Azoff, Edward A., Ding, Lifeng, Wogen, Warren R.Volume:
124
Language:
english
Journal:
Proceedings of the American Mathematical Society
DOI:
10.1090/s0002-9939-96-03381-3
Date:
October, 1996
File:
PDF, 255 KB
english, 1996