Skarlatoudis, A., and C. Papazachos. “IMPLEMENTATION OF A NON-SPLITTING FORMULATION OF PERFECTLY MATCHED LAYER IN A 3D – 4TH ORDER STAGGERED-GRID VELOCITY-STRESS FINITE-DIFFERENCE SCHEME”. Bulletin of the Geological Society of Greece, vol. 43, no. 4, Jan. 2010, pp. 1930-4, doi:10.12681/bgsg.11384.