@article{GDZPPN002233975,
title = {Graphs of finite mass which annot be approximated in area by smooth graphs.},
journal = {Manuscripta mathematica},
volume = {79},
year = {1993},
pages = {259-272},
zbl = {0796.58006},
url = {http://dml.mathdoc.fr/item/GDZPPN002233975}
}
Giaquinta, M.; Modica, G.; Soucek, J. Graphs of finite mass which annot be approximated in area by smooth graphs.. Manuscripta mathematica, Tome 79 (1993) pp. 259-272. http://gdmltest.u-ga.fr/item/GDZPPN002233975/