AKUTOWICZ, Edwin J. On an explicit formula in linear least squares prediction. Mathematica Scandinavica, Berkeley, CA, United States, v. 5, p. 261–266, 1957. DOI: 10.7146/math.scand.a-10503. Disponível em: https://journals.msp.org/mscand/article/view/2816. Acesso em: 8 sep. 2026.