Geodesic
The minimal $\Phi$-Lagrangian surfaces in almost Hermitian manyfolds
Sbornik. Mathematics, Tome 67 (1990) no. 2, pp. 379-391 
Lê Hông Vân. The minimal $\Phi$-Lagrangian surfaces in almost Hermitian manyfolds. Sbornik. Mathematics, Tome 67 (1990) no. 2, pp. 379-391. http://geodesic.mathdoc.fr/item/SM_1990_67_2_a3/
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     author = {L\^e H\^ong V\^an},
     title = {The minimal $\Phi${-Lagrangian} surfaces in almost {Hermitian} manyfolds},
     journal = {Sbornik. Mathematics},
     pages = {379--391},
     year = {1990},
     volume = {67},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1990_67_2_a3/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

A general method of calibrations is developed for the study of minimal $\Phi$-Lagrangian surfaces in almost-Hermitian manifolds. A criterion for minimality of $\Phi$-Lagrangian surfaces is given, along with a lower bound for the second variation of the volume functional on minimal $\Phi$-Lagrangian surfaces in Hermitian manifolds. The generalized Maslov index of these surfaces is shown to be trivial. Bibliography: 11 titles.

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