@article{ASNSP_1989_4_16_3_393_0,
     author = {Giaquinta, M. and Modica, G. and Sou\v{c}ek, J.},
     title = {Cartesian currents and variational problems for mappings into spheres},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {393--485},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 16},
     number = {3},
     year = {1989},
     mrnumber = {1050333},
     zbl = {0713.49014},
     language = {en},
     url = {http://archive.numdam.org/item/ASNSP_1989_4_16_3_393_0/}
}