Div., Air Force Systems Command, Wright-Patterson AFB, Ohio (reprinted in Pushing Gravity) ↑ Shneiderov, A. J. (1961), "On the internal temperature of the earth", Bollettino di Geofisica Teorica ed Applicata, 3: 137–159 ↑ Buonomano, V. & Engel, E. (1976), "Some speculations on a causal unification of relativity, gravitation, and quantum mechanics", Int.