%0 Journal Article %A Milica D Cvetković %A Ljubica S Velimirović %T Helicoid and curvature based functional variations %J Filomat %D 2023 %P 8553 %V 37 %N 25 %U http://geodesic.mathdoc.fr/articles/10.2298/FIL2325553C/ %R 10.2298/FIL2325553C %G en %F 10_2298_FIL2325553C