R. Bettega

Model for vibrations associated with molecular Rydberg transitions

R. Bettega, 1984 .

A class of exactly soluble three-body problems

R. Crandall, R. Whitnell, R. Bettega, 1985 .

Exactly soluble two‐electron atomic model

R. Crandall, R. Whitnell, R. Bettega, 1984 .