On representations of the Weil group with bounded conductor.
On the validity of Huygens' principle for second order partial differential equations with four independent variables. II. A sixth necessary condition
Huygens' principle for the non-self-adjoint scalar wave equation on Petrov type III space-times
Affine Mappings And Elliptic Functions
Relatively bounded and compact perturbations of th order differential operators.
Relative boundedness and compactness theory for second-order differential operators.
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