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10.1090/s1079-6762-03-00120-3
Petrunin, AntonVolume:
9
Language:
english
Journal:
Electronic Research Announcements of the American Mathematical Society
DOI:
10.1090/s1079-6762-03-00120-3
Date:
May, 2003
File:
PDF, 145 KB
english, 2003