FLEISCHER, I.; KOOHARIAN, A. Complements to the Karhunen Representation. MATHEMATICA SCANDINAVICA, [S. l.], v. 9, p. 83–89, 1961. DOI: 10.7146/math.scand.a-10625. Disponível em: https://www.mscand.dk/article/view/10625. Acesso em: 3 may. 2024.