THE QUADRATIC ZEEMAN EFFECT IN HYDROGEN : AN EXAMPLE OF SEMI-CLASSICAL QUANTIZATION OF A STRONGLY NON-SEPARABLE BUT ALMOST INTEGRABLE SYSTEM W. P. Reinhardt et D. FarrellyJ. Phys. Colloques, 43 C2 (1982) C2-29-C2-43DOI: https://doi.org/10.1051/jphyscol:1982204
