"Finite element analysis of a quadratic eigenvalue problem arising in dissipative acoustics" (2001) Bermúdez, A.; Durán, R.G.; Rodríguez, R.; Solomin, J. SIAM Journal on Numerical Analysis. 38(1):267-291

"A finite element method to compute damped vibration modes in dissipative acoustics" (2000) Bermúdez, A.;Durán, R.G.;Rodríguez, R. (...)Commission of European Communities (EC); Ministerio de Ciencia y Tecnologia; Generalitat de Catalunya, Comissio Interdepartamental; de Recerca i Innovacio Tecnologica (CIRIT); Autoritat Portuaria de Barcelona European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2000