Ueber neue Focaleigenschaften der Flächen zweiten Grades.
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Publication:1540752
DOI10.1007/BF01452059zbMath18.0755.02MaRDI QIDQ1540752
Publication date: 1885
Published in: Mathematische Annalen (Search for Journal in Brave)
Full work available at URL: https://eudml.org/doc/157215
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