Bernardo Gatto, Kazuhiro Fukui, Waldir S. Júnior, and Eulanda Santos. 2021.
 Advances in subspace learning and its applications. In <em>Companion Proceedings of the 34th Conference on Graphics, Patterns and Images</em>, October 18, 2021, Online, Brasil. SBC, Porto Alegre, Brasil, 35-41. DOI: <a href="https://doi.org/10.5753/sibgrapi.est.2021.20011">https://doi.org/10.5753/sibgrapi.est.2021.20011</a>.