# H. Langer

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Articles: 2

### Continuations of Hermitian indefinite functions and corresponding canonical systems: an example

Methods Funct. Anal. Topology 10 (2004), no. 1, 39-53

### A self-adjoint linear pencil $Q-\lambda P$ of ordinary differential operators

Methods Funct. Anal. Topology 2 (1996), no. 1, 38-54