@incollection{JEDP_1997____A8_0,
     author = {Giaquinta, M.},
     title = {Cartesian currents in the calculus of variations},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {8},
     pages = {1--8},
     publisher = {Ecole polytechnique},
     year = {1997},
     mrnumber = {1482275},
     language = {en},
     url = {http://archive.numdam.org/item/JEDP_1997____A8_0/}
}