Linear Operators in Almost Krein Spaces -- Generalized Resolvents of a Class of Symmetric Operators in Krein Spaces -- Block Operator Matrices, Optical Potentials, Trace Class Perturbations and Scattering -- Asymptotic Expansions of Generalized Nevanlinna Functions and their Spectral Properties -- A Necessary Aspect of the Generalized Beals Condition for the Riesz Basis Property of Indefinite Sturm-Liouville Problems -- On Reducible Nonmonic Matrix Polynomials with General and Nonnegative Coefficients -- On Exceptional Extensions Close to the Generalized Friedrichs Extension of Symmetric Operators -- On the Spectrum of the Self-adjoint Extensions of a Nonnegative Linear Relation of Defect One in a Krein Space -- Canonical Differential Equations of Hilbert-Schmidt Type -- Spectral Analysis of Differential Operators with Indefinite Weights and a Local Point Interaction -- Normal Matrices in Degenerate Indefinite Inner Product Spaces -- Symmetric Hermite-Biehler Polynomials with Defect -- A Note on Indefinite Douglas' Lemma -- Some Basic Properties of Polynomials in a Linear Relation in Linear Spaces.