Projective geometry, contact transformations, andCR-structures
Keyword(s):
1993 ◽
Vol 54
(2)
◽
pp. 191-206
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Keyword(s):
1908 ◽
Vol s2-6
(1)
◽
pp. 224-239
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Keyword(s):
1983 ◽
Vol 15
(1)
◽
pp. 31-34
◽
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