On the products of bipolar harmonics

Alexei M. Frolov, David M. Wardlaw

The products of the two and three bipolar harmonics ${\mathcal{Y}}_{LM}^{{\ell }_1{\ell }_2}({\mathbf{r}}_{31},{\mathbf{r}}_{32})$ are represented as the finite sums of powers of the three relative c…