Continuous finite elements in space and time for the nonhomogeneous wave equation
Finite element approximation, in space and time, for the wave equation with a forcing term is considered. The rates of convergence, in H1 × L2 and L2 × H-1 topology, reconstructing the "best" approximation properties of the subspaces are derived. © 1994.
Computers and Mathematics with Applications
Bales, L., & Lasiecka, I. (1994). Continuous finite elements in space and time for the nonhomogeneous wave equation. Computers and Mathematics with Applications, 27 (3), 91-102. https://doi.org/10.1016/0898-1221(94)90048-5