Yazar: Bernacca, Pier Luigi | Ruffini, Remo.
Yazar: Marcel Grossmann Meeting on General Relativity University of Rome "La Sapienza" 1979 (4th | Ruffini, Remo.
Yazar: Marcel Grossmann Meeting on General Relativity Trieste, Italy 1979 (2nd | Ruffini, Remo | International Centre for Theoretical Physics.
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