@article{COMIM_2010_18_1_a1,
     author = {Saunders, David},
     title = {Some geometric aspects of the calculus of variations in several independent variables},
     journal = {Communications in Mathematics},
     pages = {3--19},
     year = {2010},
     volume = {18},
     number = {1},
     mrnumber = {2848502},
     zbl = {1235.58014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/COMIM_2010_18_1_a1/}
}