Ito, E; Takahashi, E (1989). «Postspinel transformations in the system Mg2SiO4-Fe2SiO4 and some geophysical implications». Journal of Geophysical Research: Solid Earth94 (B8): 10637-10646. Bibcode:1989JGR....9410637I. doi:10.1029/jb094ib08p10637.
Fukao, Y.; Obayashi, M. (2013). «Subducted slabs stagnant above, penetrating through, and trapped below the 660 km discontinuity». Journal of Geophysical Research: Solid Earth118 (11): 5920-5938. Bibcode:2013JGRB..118.5920F. doi:10.1002/2013jb010466.
Egorkin, A. V. (1 de enero de 1997). «Evidence for 520-Km Discontinuity». En Fuchs, Karl, ed. Upper Mantle Heterogeneities from Active and Passive Seismology. NATO ASI Series (en inglés). Springer Netherlands. pp. 51-61. ISBN9789048149667. doi:10.1007/978-94-015-8979-6_4.
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Ito, E; Takahashi, E (1989). «Postspinel transformations in the system Mg2SiO4-Fe2SiO4 and some geophysical implications». Journal of Geophysical Research: Solid Earth94 (B8): 10637-10646. Bibcode:1989JGR....9410637I. doi:10.1029/jb094ib08p10637.
Fukao, Y.; Obayashi, M. (2013). «Subducted slabs stagnant above, penetrating through, and trapped below the 660 km discontinuity». Journal of Geophysical Research: Solid Earth118 (11): 5920-5938. Bibcode:2013JGRB..118.5920F. doi:10.1002/2013jb010466.