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1930 ÜBER DIE DIFFERENTIALGEOMETRIE VON KEGELSCHNITTEN IM DREIDIMENSIONALEN PROJEKTIVEN RAUME
Akitsugu KAWAGUCHI
J. Fac. Sci. Hokkaido Imp. Univ. Ser. I Math. 1(1): 1-45 (1930). DOI: 10.14492/hokmj/1531209787
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