Frohlich, Cliff; Nakamura, Yosio (2009). "The physical mechanisms of deep moonquakes and intermediate-depth earthquakes: How similar and how different?". Physics of the Earth and Planetary Interiors. 173 (3–4): 365–374. Bibcode:2009PEPI..173..365F. doi:10.1016/j.pepi.2009.02.004.
Frohlich, Cliff; Nakamura, Yosio (2009). "The physical mechanisms of deep moonquakes and intermediate-depth earthquakes: How similar and how different?". Physics of the Earth and Planetary Interiors. 173 (3–4): 365–374. Bibcode:2009PEPI..173..365F. doi:10.1016/j.pepi.2009.02.004.