Geodesic
Backward uniqueness for the heat operator in half-space
Algebra i analiz, Tome 15 (2003) no. 1, pp. 201-214.

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

A backward uniqueness result is proved for the heat operator with variable lower order terms in a half-space. The main point of the result is that the boundary conditions are not controlled by the assumptions. 
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L. Escauriaza; G. Seregin; V. Šverak. Backward uniqueness for the heat operator in half-space. Algebra i analiz, Tome 15 (2003) no. 1, pp. 201-214. http://geodesic.mathdoc.fr/item/AA_2003_15_1_a6/

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