Kaushal, Radhey Shyam. Classical and quantum mechanics of noncentral potentials : a survey of two-dimensional systems / R.S. Kaushal. - New Delhi : Narosa, c1998. - xiv, 209 p. ; 25 cm. ISBN: 8173191697 Subjects--Index Terms: Quantum theory--Mathematics Mathematical physics Dewey Class. No.: 530.12 / KAU