Geodesic
Solutions of the differential inequality with a null Lagrangian: higher integrability and removability of singularities. II
Vladikavkazskij matematičeskij žurnal, Tome 16 (2014) no. 4, pp. 41-48 Cet article a éte moissonné depuis la source Math-Net.Ru

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The aim of this paper is to establish a result on removability of singularities for solutions of the differential inequality with a null Lagrangian. Also, we obtain integral estimates for wedge products of closed differential forms and for minors of a Jacobian matrix. 
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A. A. Egorov. Solutions of the differential inequality with a null Lagrangian: higher integrability and removability of singularities. II. Vladikavkazskij matematičeskij žurnal, Tome 16 (2014) no. 4, pp. 41-48. http://geodesic.mathdoc.fr/item/VMJ_2014_16_4_a4/

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