Boutabia H., MeradjiS., and StihiS. “Stochastic Differential Equations for eigenvalues and Eigenvectors of a $G$-Wishart Process With Drift”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 71, no. 4, Apr. 2019, pp. 502-15, https://umj.imath.kiev.ua/index.php/umj/article/view/1454.