Geodesic
Integral representations of functions and embeddings of Sobolev spaces on cuspidal domains
Matematičeskie zametki, Tome 61 (1997) no. 2, pp. 201-219.

Voir la notice de l'article provenant de la source Math-Net.Ru

Some classes of cuspidal domains $G\in\mathbb R^n$ are introduced, and embeddings of the form $W_p^{(l)}(G)\hookrightarrow L_q(G)$, $l\in\mathbb N$, for Sobolev spaces are established. To this end, estimates of some integral operators are needed. These operators cannot be estimated via Riesz potentials or their anisotropic analogs. 
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D. A. Labutin. Integral representations of functions and embeddings of Sobolev spaces on cuspidal domains. Matematičeskie zametki, Tome 61 (1997) no. 2, pp. 201-219. http://geodesic.mathdoc.fr/item/MZM_1997_61_2_a2/

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