Quantum machine learning optimization using Koopman operator technique. Periodicals of Engineering and Natural Sciences, [S. l.], v. 13, n. 2, p. 327–336, 2025. DOI: 10.21533/pen.v13.i2.317. Disponível em: https://pen.ius.edu.ba/index.php/pen/article/view/317. Acesso em: 8 oct. 2025.