VORONIN, K.; SOLOVYEV, S. Solution of the Helmholtz problem using the preconditioned low-rank approximation technique. Numerical Methods and Programming (Vychislitel’nye Metody i Programmirovanie), [S. l.], v. 16, n. 44, p. 268–280, 2015. DOI: 10.26089/NumMet.v16r226. Disponível em: https://en.num-meth.ru/index.php/journal/article/view/832. Acesso em: 27 apr. 2024.