@article{RRACEFN_1988_1988_1_a38,
     author = {Mu\~noz Masqu\'e, Jaime},
     title = {El problema de la regularidad en el c\'alculo de variaciones de segundo orden.},
     journal = {Revista de la Real Academia de Ciencias Exactas, F{\'\i}sicas y Naturales },
     pages = {541-544},
     publisher = {mathdoc},
     volume = {82},
     number = {3-4},
     year = {1988},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/RRACEFN_1988_1988_1_a38/}
}