Bona, A., & Slawinski, M. (2003). Fermat's principle for seismic rays in elastic media. Elsevier.
Chicago Style CitationBona, Andrej, and M. Slawinski. Fermat's Principle for Seismic Rays in Elastic Media. Elsevier, 2003.
MLA CitationBona, Andrej, and M. Slawinski. Fermat's Principle for Seismic Rays in Elastic Media. Elsevier, 2003.
Warning: These citations may not always be 100% accurate.