@incollection{JEDP_1997____A8_0,
     author = {M. Giaquinta},
     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},
     doi = {10.5802/jedp.520},
     mrnumber = {1482275},
     language = {en},
     url = {https://proceedings.centre-mersenne.org/articles/10.5802/jedp.520/}
}