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PHOTOELECTRIC OBSERVATIONS OF HD 77581.VIDAL NV.1974; PUBL. ASTR. SOC. PACIF.; U.S.A.; DA. 1974; VOL. 86; NO 511; PP. 317-320; BIBL. 8 REF.Article

THE X-RAY BINARY HD 77581.HUTCHINGS JB.1974; ASTROPHYS. J.; U.S.A.; DA. 1974; VOL. 192; NO 3 PART. 1; PP. 685-689; BIBL. 16 REF.Article

BINARY NATURE OF THE B SUPERGIANT IN THE ERROR BOX OF THE VELA X-RAY SOURCEHILTNER WA; OSMER P.1972; ASTROPHYS. J.; U.S.A.; DA. 1972; VOL. 175; NO 1, PART2; PP. 19-22; BIBL. 11REF.Serial Issue

OPTICAL OBSERVATIONS OF HD77581 AND A MODEL FOR THE SYSTEM HD77581-2U0900-40.PETRO LD; HILTNER WA.1974; ASTROPHYS. J.; U.S.A.; DA. 1974; VOL. 109; NO 3 PART. 1; PP. 661-666; BIBL. 21 REF.Article

HIGH-DISPERSION SPECTROSCOPIC OBSERVATIONS OF HD 77581, A CANDIDATE FOR VELA XR-1 (2U 0900-40).WALLERSTEIN G.1974; ASTROPHYS. J.; U.S.A.; DA. 1974; VOL. 194; NO 2 PART. 1; PP. 451-457; BIBL. 17 REF.Article

DISCOVERY OF OPTICAL PULSATIONS IN HD 77581=-VELA X-1.STEINER JE.1977; ASTR. AND ASTROPHYS.; GERM.; DA. 1977; VOL. 61; NO 5; PP. L35-L36; BIBL. 7 REF.Article

HALPHA OBSERVATIONS AND THE DISTRIBUTION OF CIRCUMSTELLAR MATERIAL IN THE HD 77581 SYSTEM (3U 0900-40).BESSELL MS; VIDAL NV; WICKRAMASINGHE DT et al.1975; ASTROPHYS. J.; U.S.A.; DA. 1975; VOL. 195; NO 3 PART. 2; PP. L117-L120; BIBL. 17 REF.Article

LIMITATIONS ON THE MASSES AND OTHER DIMENSIONS OF THE BINARY HD 77581.MIKKELSEN DR; WALLERSTEIN G.1974; ASTROPHYS. J.; U.S.A.; DA. 1974; VOL. 194; NO 2 PART. 1; PP. 459-463; BIBL. 35 REF.Article

OPTICAL CANDIDATES FOR TWO X-RAY SOURCESBRUCATO RJ; KRISTIAN J.1972; ASTROPHYS. J.; U.S.A.; DA. 1972; VOL. 173; NO 3, PART. 2; PP. 105-107; BIBL. 18REF.Serial Issue

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

SYSTEMATIC DISTORTIONS OF THE RADIAL VELOCITY CURVE OF HD 77581 (VELA X-1) DUE TO TIDAL DEFORMATION.VAN PARADIJS J; TAKENS R; ZUIDERWIJK E et al.1977; ASTR. AND ASTROPHYS.; GERM.; DA. 1977; VOL. 57; NO 1-2; PP. 221-227; BIBL. 23 REF.Article

Variable polarization in X-ray binaries: HD 77581 (=4U 0900-40)DOLAN, J. F; TAPIA, S.Astronomy and astrophysics (Berlin. Print). 1988, Vol 202, Num 1-2, pp 124-132, issn 0004-6361Article

Observations of stellar winds in high-mass X-ray binaries: evidence for a non-monotonic velocity structureKAPER, L; HAMMERSCHLAG-HENSBERGE, G; VAN LOON, J. TH et al.Astronomy and astrophysics (Berlin. Print). 1993, Vol 279, Num 2, pp 485-498, issn 0004-6361Article

STELLAR PARAMETERS OF FIVE EARLY TYPE COMPANIONS OF X-RAY SOURCES.CONTI PS.1978; ASTR. AND ASTROPHYS.; GERM.; DA. 1978; VOL. 63; NO 1-2; PP. 225-235; BIBL. 1 P.Article

Tidal effects on the radial velocity curve of HD 77581 (Vela X-1)KOENIGSBERGER, G; MORENO, E; HARRINGTON, D. M et al.Astronomy and astrophysics (Berlin. Print). 2012, Vol 539, issn 0004-6361, A84.1-A84.11, 2Article