Não informado. (2003). Commentationes Mathematicae Universitatis Carolinae. Charles University, Faculty of Mathematics and Physics.
Lua i Stíl Chicago (17ú heag.)Não informado. Commentationes Mathematicae Universitatis Carolinae. Prague: Charles University, Faculty of Mathematics and Physics, 2003.
Lua MLA (8ú heag.)Não informado. Commentationes Mathematicae Universitatis Carolinae. Charles University, Faculty of Mathematics and Physics, 2003.
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