Citace podle APA (7th ed.)
Wilczynski, E. J. (1906). Projective differential Geometry of curves and ruled surfaces.
Citace podle Chicago (17th ed.)
Wilczynski, Ernest Julius. Projective Differential Geometry of Curves and Ruled Surfaces. Leipzig, 1906.
Citace podle MLA (9th ed.)
Wilczynski, Ernest Julius. Projective Differential Geometry of Curves and Ruled Surfaces. 1906.
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