TY  - DATA
AU  - Volodymyr Koshmanenko
TI  - Singular Quadratic Forms in Perturbation Theory
SN  - 9789401146197
PY  - 1999///
PB  - Springer Netherlands
KW  - Mathematics and Statistics
UR  - https://doi.org/10.1007/978-94-011-4619-7
ER  -