KUKUSH, A. G.; POLEKHA, M. Ya. Consistent estimator in multivariate errors-in-variables model in the case of unknown error covariance structure. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 59, n. 8, p. 1026–1033, 2007. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3366. Acesso em: 6 dec. 2025.