TY  - JOUR
A1  - Neidhardt, Hagen
A1  - Zagrebnov, Valentin A.
T1  - On the right Hamiltonian for the singular perturbations : general theory
Y1  - 1997
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/24580
ER  -