International Astronomical Union. (1974). Gravitational radiation and gravitational Collapse: Symposium no. 64, held in Warsaw. D. Reidel.
Chicago-viite (17. p.)International Astronomical Union. Gravitational Radiation and Gravitational Collapse: Symposium No. 64, Held in Warsaw. Dordrecht-Holland: D. Reidel, 1974.
MLA-viite (9. p.)International Astronomical Union. Gravitational Radiation and Gravitational Collapse: Symposium No. 64, Held in Warsaw. D. Reidel, 1974.
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