Quasi-minima
Annales de l'I.H.P. Analyse non linéaire, Tome 1 (1984) no. 2, pp. 79-107. 
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Giaquinta, Mariano; Giusti, Enrico. Quasi-minima. Annales de l'I.H.P. Analyse non linéaire, Tome 1 (1984) no. 2, pp. 79-107. http://archive.numdam.org/item/AIHPC_1984__1_2_79_0/

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