A Note on the Projective Differential Geometry of a Surface
1999 ◽
Vol 11
(2)
◽
pp. 117-128
◽
2000 ◽
Vol 54
(1)
◽
pp. 183-215
◽
1935 ◽
Vol 41
(4)
◽
pp. 273-276
2004 ◽
Vol 52
(3)
◽
pp. 328-352
◽
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