upward

Exact results

Zakhariev B N, Chabanov V M, New situation in quantum mechanics (wonderful potentials from the inverse problem), Inverse Problems 13, R47 (1997)

Rau A R P, The asymmetric rotor as a model for localization, RMP 64, 623 (1992)

Решаемые модели в квантовой механике (Наука, 1991)