ADRAGNI, K. P.; COOK, R. D.; WU, S. GrassmannOptim: An R Package for Grassmann Manifold Optimization. Journal of Statistical Software, [S. l.], v. 50, n. 5, p. 1–18, 2012. DOI: 10.18637/jss.v050.i05. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v050i05. Acesso em: 28 may. 2022.