Two-plane sub-bundles of nonorientable real vector-bundles
1980 ◽
Vol 87
(1)
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pp. 97-107
◽
2015 ◽
Vol 189
◽
pp. 1-9
◽
Keyword(s):
1971 ◽
Vol 157
◽
pp. 179-179
◽
2002 ◽
Vol 42
(2)
◽
pp. 223-242
◽