MGDS References
Harmon, N., P. Gerstoft, C.A. Rychert, G.A. Abers, M. Salas de la Cruz and K.M. Fischer, "Phase velocities from seismic noise using beamforming and cross correlation in Costa Rica and Nicaragua", Geophysical Research Letters, : , 2008, DOI 10.1029/2008GL035387. (View Reference)
