1. Reciprocity in Elastodynamics;Achenbach,2003
2. (Bi)-orthogonality relation for eigenfunctions of self-adjoint operators;Ledet;Philos. Trans. R. Soc. Lond.,2019
3. An orthogonality condition for a class ofproblem with high order boundary conditions: applications in sound/structure interaction;Lawrie;Q. J. Mech. Appl. Math.,1999
4. Orthogonality relations for fluid-structural waves in a three-dimensional, rectangular duct with flexible walls;Lawrie;Proc. R. Soc. Lond. Ser. A Math. Phys. Eng. Sci.,2009
5. Bi-orthogonality relationsships involving porous media;Scandrett;J. Acoust. Soc. Am.,1995