1990

• Clark, T., Ma, C., Sauber-Rosenberg, J.M., & et al.,
  (1990). Geodetic measurement of deformation in the Loma Prieta, California earthquake with very long baseline interferometry. Geophysical Research Lett, 17(8), 1215–1218.
• Ma, C., Sauber-Rosenberg, J.M., Bell, L.J., & et al.,
  (1990). Measurement of horizontal motions in Alaska using Very Long Baseline Interferometry. Journal of Geophysical Research, 95(B13), 21991.