%0 Journal Article %A Mangeron, D. %A Irimiciuc, N. %A D'Ambrosio, U. %T New trends in mechanics. I. Generalized differential variational principles in rational mechanics. %J Revista de la Real Academia de Ciencias Exactas, FĂ­sicas y Naturales %D 1981 %P 97-108 %V 75 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/RRACEFN_1981_1981_1_a6/ %G es %F RRACEFN_1981_1981_1_a6