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\bibitem{Gielis+Tavkhelidze2020} {\textquotedblleft}\textit{The general case of cutting of Generalized M{\"o}bius-Listing surfaces and bodies}{\textquotedblright}. Gielis J, Tavkhelidze I, 4Open \textbf{3}, 7 (2020).   http://doi.org/10.1051/FOPEN/2020007

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