%0 Journal Article %A Klassen, Eric %A Michor, Peter W. %T Closed surfaces with different shapes that are indistinguishable by the SRNF %J Archivum mathematicum %D 2020 %P 107-114 %V 56 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.5817/AM2020-2-107/ %R 10.5817/AM2020-2-107 %G en %F 10_5817_AM2020_2_107