HOLOVATYI, Yu. D.; HUT, V. M. Vibrating Systems with Rigid Light-Weight Inclusions: Asymptotics of the Spectrum and Eigenspaces. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 64, n. 10, p. 1314–1329, 2012. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2661. Acesso em: 5 dec. 2025.