Varshalovich, D. A. Quantum theory of angular momentum irreducible tensors, spherical harmonics, vector coupling coefficients, 3 nj symbols D. A. Varshalovich, A. N. Moskalev and V. K. Khersonskii - Singapore World Scientific 1989 - x, 514p. ISBN: 9971-50-996-2 Subjects--Topical Terms: Astronomy Universal Decimal Class. No.: 530.1 / VAR