1
Relativity theory and astrophysics. 2, 4. Galactic structure : summer seminar on applied mathematics : Ithaca, NY, 26.07.65-20.08.65.
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2
Relativity theory and astrophysics. 1, 4. Relativity and cosmology : summer seminar on applied mathematics : Ithaca, NY, 26.07.65-20.08.65.
Book
3
Relativity theory and astrophysics. 3, 4. Stellar structure : Summer Seminar on Applied Mathematics : Ithaca, NY, 26.07.1965-20.08.1965.
Book
4
Sistemi gravitazionali isolati in relativita generale : rendiconti della Scuola Internationale di Fisica Enrico Fermi corso 67, Varenna 1976 : proceedings of the International School of Physics Enrico Fermi course 67.
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5
Texas symposium on relativistic astrophysics 0009 : München, 14.12.78-19.12.78.
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