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Monatshefte für Mathematik > 2018 > 186 > 2 > 249-279
Journal of Geometry > 2017 > 108 > 2 > 545-563
Computers and Mathematics with Applications > 2011 > 62 > 8 > 2899-2912
Monatshefte für Mathematik > 2018 > 186 > 2 > 249-279
Journal of Geometry > 2017 > 108 > 2 > 545-563
Computers and Mathematics with Applications > 2011 > 62 > 8 > 2899-2912