TY - DATA AU - M. Demuth, B.W. Schulze, B. Gramsch TI - Operator Calculus and Spectral Theory SN - 9783034886239 PY - 1992/// PB - Birkhäuser Basel KW - Mathematics and Statistics UR - https://doi.org/10.1007/978-3-0348-8623-9 ER -