GILL, John. Enhancing the convergence region of a sequence of bilinear transformations. Mathematica Scandinavica, Berkeley, CA, United States, v. 43, p. 74–80, 1978. DOI: 10.7146/math.scand.a-11765. Disponível em: https://journals.msp.org/mscand/article/view/1882. Acesso em: 25 jul. 2026.