Cartesian currents and variational problems for mappings into spheres
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Serie 4, Volume 16 (1989) no. 3, pp. 393-485.
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     title = {Cartesian currents and variational problems for mappings into spheres},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {393--485},
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}
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Giaquinta, M.; Modica, G.; Souček, J. Cartesian currents and variational problems for mappings into spheres. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Serie 4, Volume 16 (1989) no. 3, pp. 393-485. http://archive.numdam.org/item/ASNSP_1989_4_16_3_393_0/

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