Classification and normal forms for quantum mechanical eigenvalue cossings
Méthodes semi-classiques Volume 2 - Colloque international (Nantes, juin 1991), Astérisque, no. 210 (1992), pp. 115-134. 
@incollection{AST_1992__210__115_0,
     author = {Hagedorn, George A.},
     title = {Classification and normal forms for quantum mechanical eigenvalue cossings},
     booktitle = {M\'ethodes semi-classiques Volume 2 - Colloque international (Nantes, juin 1991)},
     series = {Ast\'erisque},
     pages = {115--134},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {210},
     year = {1992},
     language = {en},
     url = {http://archive.numdam.org/item/AST_1992__210__115_0/}
}
TY  - CHAP
AU  - Hagedorn, George A.
TI  - Classification and normal forms for quantum mechanical eigenvalue cossings
BT  - Méthodes semi-classiques Volume 2 - Colloque international (Nantes, juin 1991)
AU  - Collectif
T3  - Astérisque
PY  - 1992
SP  - 115
EP  - 134
IS  - 210
PB  - Société mathématique de France
UR  - http://archive.numdam.org/item/AST_1992__210__115_0/
LA  - en
ID  - AST_1992__210__115_0
ER  - 
%0 Book Section
%A Hagedorn, George A.
%T Classification and normal forms for quantum mechanical eigenvalue cossings
%B Méthodes semi-classiques Volume 2 - Colloque international (Nantes, juin 1991)
%A Collectif
%S Astérisque
%D 1992
%P 115-134
%N 210
%I Société mathématique de France
%U http://archive.numdam.org/item/AST_1992__210__115_0/
%G en
%F AST_1992__210__115_0
Hagedorn, George A. Classification and normal forms for quantum mechanical eigenvalue cossings, dans Méthodes semi-classiques Volume 2 - Colloque international (Nantes, juin 1991), Astérisque, no. 210 (1992), pp. 115-134. http://archive.numdam.org/item/AST_1992__210__115_0/

1. Hagedorn, G. A.: High Order Corrections to the Time-Dependent Born-Oppenheimer Approximation I: Smooth Potentials. Ann. Math. 124, 571-590 (1986).

Hagedorn, G. A.: High Order Corrections to the Time-Dependent Born-Oppenheimer Approximation I: Smooth Potentials. Erratum 126, 219 (1987).

2. Hagedorn, G. A.: High Order Corrections to the Time-Dependent Born-Oppenheimer Approximation II: Coulomb Systems. Comm. Math. Phys. 117, 387-403 (1988).

3. Hagedorn, G. A.: Electron Energy Level Crossings in the Time-Dependent Born-Oppenheimer Approximation. Theor. Chimica Acta. 77, 163-190 (1990).

4. Hagedorn, G. A.: Analysis of Energy Level Crossings in the Time-Dependent Born-Oppenheimer Approximation, (in preparation).

5. Lever, J., and Shaw, R.: Irreducible Multiplier Corepresentations and Generalized Inducing. Comm. Math. Phys. 38, 257-277 (1974).

6. Wigner, E. P. : Group Theory and its Application to the Quantum Mechanics of Atomic Spectra. New York : Academic Press, 1959.