The Calabi Invariant and Central Extensions of Diffeomorphism Groups
1986 ◽
Vol 100
(2)
◽
pp. 281-301
◽
2007 ◽
Vol 313
(1)
◽
pp. 165-175
◽
2010 ◽
Vol 31
(4)
◽
pp. 1269-1272
1998 ◽
Vol 160
(1)
◽
pp. 337-365
◽
Keyword(s):
Keyword(s):