%0 Journal Article %A Mantegazza, Carlo %T Some elementary questions in the calculus of variations %J Rendiconti del Seminario Matematico della Università di Padova %D 2021 %P 107-115 %V 145 %U http://archive.numdam.org/articles/10.4171/rsmup/73/ %R 10.4171/rsmup/73 %G en %F RSMUP_2021__145__107_0