https://www.impan.pl/en/publishing-house/journals-and-series/applicationes-mathematicae/all/en/publishing-house/journals-and-series/applicationes-mathematicae/all/27/2/111540/linearization-of-arbitrary-products-of-classical-orthogonal-polynomials
Linearization of Arbitrary products of classical orthogonal polynomialsAll
linearizationarbitraryproductsclassicalorthogonal