CHI CONG, Ha. e-Idempotent Matrices over Commutative Semirings. VNU Journal of Science: Mathematics - Physics, [S.l.], v. 41, n. 2, june 2025. ISSN 2588-1124. Available at: <https://js.vnu.edu.vn/MaP/article/view/4979>. Date accessed: 29 oct. 2025. doi: https://doi.org/10.25073/2588-1124/vnumap.4979.