Greenspan, D.; Werner, P. A numerical method for the exterior Dirichlet problem for the reduced wave equation. (English) Zbl 0161.12701 Arch. Ration. Mech. Anal. 23, 288-316 (1966). PDFBibTeX XMLCite \textit{D. Greenspan} and \textit{P. Werner}, Arch. Ration. Mech. Anal. 23, 288--316 (1966; Zbl 0161.12701) Full Text: DOI
Zemach, C.; Odeh, F. Uniqueness of radiative solutions to the Schrödinger wave equation. (English) Zbl 0136.09201 Arch. Ration. Mech. Anal. 5, 226-237 (1960). PDFBibTeX XMLCite \textit{C. Zemach} and \textit{F. Odeh}, Arch. Ration. Mech. Anal. 5, 226--237 (1960; Zbl 0136.09201) Full Text: DOI