FERGUSON, S. H.; ROCHBERG, R. Higher order Hilbert-Schmidt Hankel forms and tensors of analytical kernels. MATHEMATICA SCANDINAVICA, [S. l.], v. 96, n. 1, p. 117–146, 2005. DOI: 10.7146/math.scand.a-14948. Disponível em: https://www.mscand.dk/article/view/14948. Acesso em: 23 nov. 2024.