GALINSKY, D. V. Representations of $*$-algebras generated by orthogonal projections satisfying a linear relation. Methods of Functional Analysis and Topology, [S. l.], v. 4, n. 3, p. 27–32, 1998. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/64. Acesso em: 19 dec. 2025.