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THE SPECTROSCOPIC ORBIT AND THE MASSES OF THE COMPONENTS OF THE BINARY X-RAY SOURCE 3U0900-40/HD 77581.VAN PARADIJS J; ZUIDERWIJK EJ; TAKENS RJ et al.1977; ASTR. AND ASTROPHYS., SUPPL. SER.; GERM.; DA. 1977; VOL. 30; NO 2; PP. 195-211; BIBL. 28 REF.Article

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