Ng, Shu-Kay, and Geoffrey J. McLachlan. “On Some Variants of the EM Algorithm for the Fitting of Finite Mixture Models”. Austrian Journal of Statistics 32, no. 1&2 (April 3, 2016): 143–161. Accessed May 18, 2024. https://www.ajs.or.at/index.php/ajs/article/view/vol32%2C%20no1%262%20-%208.