The wave equation with oscillating density : observability at low frequency
Lebeau, Gilles1 
1 Centre de Mathématiques, École Polytechnique, UMR 7640 CNRS, 91128 Palaiseau Cedex, France
Séminaire Goulaouic-Schwartz (1998-1999), Exposé no. 17, 11 p.

Lebeau, Gilles 1

1 Centre de Mathématiques, École Polytechnique, UMR 7640 CNRS, 91128 Palaiseau Cedex, France 
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     year = {1998-1999},
     publisher = {Centre de math\'ematiques Laurent Schwartz, \'Ecole polytechnique},
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     url = {https://www.numdam.org/item/SEDP_1998-1999____A17_0/}
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Lebeau, Gilles. The wave equation with oscillating density : observability at low frequency. Séminaire Goulaouic-Schwartz (1998-1999), Exposé no. 17, 11 p.. https://www.numdam.org/item/SEDP_1998-1999____A17_0/

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