Geodesic
Depression conditions for linear equations with major partial derivatives
Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (2007), pp. 45-54 
O. A. Koshcheeva. Depression conditions for linear equations with major partial derivatives. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (2007), pp. 45-54. http://geodesic.mathdoc.fr/item/IVM_2007_6_a5/
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     title = {Depression conditions for linear equations with major partial derivatives},
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}
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Voir la notice de l'article provenant de la source Math-Net.Ru

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