A review of the coupling parameter of the Burton and Miller boundary element method
The phenomenon of irregular frequencies or spurious modes in boundary element techniques for acoustic problems has been well investigated and a number of methods have been presented to overcome this problem.
John Davy, Charles Don, Terry McMinn, Liz Dowsett, Norm Broner; Burgess, Marion
INTER-NOISE and NOISE-CON. Proceedings of the 43rd International Congress on Noise Control Engineering