We use SPECFEM1D current source ( Komatitsch and Tromp, 1999; Komatitsch and Vilotte, 1998;) published under the GPL 2 license.
Tromp, J.; Komatitsch, D. (2013), SPECFEM1D v1.0.4 [software], url: https://geodynamics.org
Komatitsch, D.; Tromp, J. (1999), Introduction to the spectral element method for three-dimensional seismic wave propagation, Geophysical journal international, 139 (3) , 806-822
Komatitsch, D.; Vilotte, J.-P. (1998), The spectral element method: An efficient tool to simulate the seismic response of 2D and 3D geological structures, Bulletin of the Seismological Society of America, 88 (2) , 368-392, url: http://www.bssaonline.org/content/88/2/368.abstract
For previous versions, please use the above substitute in the appropriate version and year.
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