BAVULA, V. V. Classification of modules of dimension $n$ and multiplicity 1 over the Weyl algebra $A_n$. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 48, n. 5, p. 579–587, 1996. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5290. Acesso em: 27 apr. 2025.