Measurement of Angle Between Subspaces in Direct Sum Decomposition. International Journal of Automation and Digital Transformation, [S. l.], v. 1, n. 2, p. 91–99, 2023. DOI: 10.54878/d5n9qv92. Disponível em: https://emiratesscholar.com/directory/index.php/ijadt/article/view/13.. Acesso em: 19 may. 2024.