Other

888-987 in englischer Sprachfassung (Normativer Teil)..

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Where the authorities of a Member State in which a public document or its certified copy is presented have reasonable doubt as to their authenticity, which cannot be otherwise

We al- ways consider the Laplace operator − ∆ with Dirichlet boundary conditions; other elliptic operator can be considered, while consider- ing other boundary conditions (Neumann or