KONDRATIEV, Yu. G.; KONSTANTINOV, A. Yu.; FINKELSHTEIN, D. L.; RÖCKNER, M. Symmetric differential operators of the second order in Poisson spaces. Methods of Functional Analysis and Topology, [S. l.], v. 6, n. 4, p. 14–25, 2000. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/129. Acesso em: 17 dec. 2025.