EM ALGORITHM FOR MAXIMUM LIKELIHOOD ESTIMATION OF CORRELATED PROBIT MODEL FOR TWO LONGITUDINAL ORDINAL OUTCOMES. Annual of Sofia University St. Kliment Ohridski. Faculty of Mathematics and Informatics, [S. l.], v. 104, p. 217–232, 2017. Disponível em: https://annual.uni-sofia.bg/index.php/fmi/article/view/47. Acesso em: 14 dec. 2025.