1.
Machado MAG, Costa AFB. Monitoring the Mean Vector and the Covariance Matrix of Bivariate Processes. BJO&PM [Internet]. 2010 Feb. 8 [cited 2024 Mar. 29];5(1):47-62. Available from: https://bjopm.org.br/bjopm/article/view/BJV5N1_2008_P3