G. Giorgiani, D. Modesto, S. Fernández-Méndez, A. Huerta. High-order continuous and discontinuous Galerkin methods for wave problems. Int. J. Numer. Meth. Fluids (2013) DOI 10.1002/fld.3828
V. Darrigrand, Á. Rodríguez-Rozas, I. Muga, D. Pardo, A. Romkes, S. Prudhomme. Goal-oriented adaptivity using unconventional error representations for the multidimensional Helmholtz equation. Int. J. Numer. Meth. Engng 113(1) (2017) DOI 10.1002/nme.5601
L. Steffens, N. Parés, P. Díez. Estimation of the dispersion error in the numerical wave number of standard and stabilized finite element approximations of the Helmholtz equation. Int. J. Numer. Meth. Engng. 86(10) (2011) DOI 10.1002/nme.3104
L. Steffens, N. Parés, P. Díez. Goal-oriented h-adaptivity for the Helmholtz equation: error estimates, local indicators and refinement strategies. Comput Mech 47(6) (2011) DOI 10.1007/s00466-010-0557-2