ON THE PROPERTIES OF THE NORMAL MAPPING GENERATED BY THE EQUATIONS $ rt-s^2=-f^2(x,\,y)$
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Publication:5621743
DOI10.1070/SM1970V011N02ABEH002067zbMath0217.47004OpenAlexW1490817750MaRDI QIDQ5621743
Publication date: 1971
Published in: Mathematics of the USSR-Sbornik (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1070/sm1970v011n02abeh002067
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