COMMENTARII MATHEMATICI HELVETICI
journal44053
E039822
CH
0010-2571
English:(French and German and Italian)
Rivista
Birkhaeuser Verlag AG:Viaduktstrasse 42-44, CH 4051 Basel Switzerland:011 41 61 2050707, EMAIL: subscriptions@birkhauser.ch, INTERNET: http://www.birkhauser.ch, Fax: 011 41 61 2050792
1929
cannot
can
true