%0 Journal Article %A Jerzy Konderak %T Natural first order Lagrangians for immersions %J Annales Polonici Mathematici %D 1998 %P 207-215 %V 69 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-69-3-207-215/ %R 10.4064/ap-69-3-207-215 %G en %F 10_4064_ap_69_3_207_215