35 DAY CYCLE OF X-RAY BINARY HERCULES X-1

[11] CROSA L, 1976, PREPRINT

[12] COPERNICUS AND ARIEL-V OBSERVATIONS OF HERCULES X-1 [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1977, 178 (01) : P1 - P8

[13] ANALYSIS OF PERIODIC OPTICAL VARIABILITY IN COMPACT X-RAY SOURCE HER X-1-HZ HERCULIS [J]. ASTROPHYSICAL JOURNAL, 1976, 206 (03) : 861 - 868

[14] ORBITAL PRECESSION IN HERCULES X-1 [J]. ASTROPHYSICAL JOURNAL, 1976, 210 (03) : L133 - L136

[15] LONG-TERM BEHAVIOR OF HERCULES X-1 [J]. NATURE, 1973, 244 (5413) : 212 - 213

[16] FECHNER WB, 1976, PREPRINT

[17] FLANNERY BP, 1976, PREPRINT

[18] OPTICAL CLUES TO NATURE OF HERCULES X-1-HZ HERCULIS [J]. ASTROPHYSICAL JOURNAL, 1976, 209 (02) : 562 - 573

[19] FURTHER X-RAY OBSERVATIONS OF HERCULES X-1 FROM UHURU [J]. ASTROPHYSICAL JOURNAL, 1973, 184 (01) : 227 - 236

[20] GURSKY H, 1975, VARIABLE STARS STELL, P413

[11] CROSA L, 1976, PREPRINT

[12] COPERNICUS AND ARIEL-V OBSERVATIONS OF HERCULES X-1 [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1977, 178 (01) : P1 - P8

[13] ANALYSIS OF PERIODIC OPTICAL VARIABILITY IN COMPACT X-RAY SOURCE HER X-1-HZ HERCULIS [J]. ASTROPHYSICAL JOURNAL, 1976, 206 (03) : 861 - 868

[14] ORBITAL PRECESSION IN HERCULES X-1 [J]. ASTROPHYSICAL JOURNAL, 1976, 210 (03) : L133 - L136

[15] LONG-TERM BEHAVIOR OF HERCULES X-1 [J]. NATURE, 1973, 244 (5413) : 212 - 213

[16] FECHNER WB, 1976, PREPRINT

[17] FLANNERY BP, 1976, PREPRINT

[18] OPTICAL CLUES TO NATURE OF HERCULES X-1-HZ HERCULIS [J]. ASTROPHYSICAL JOURNAL, 1976, 209 (02) : 562 - 573

[19] FURTHER X-RAY OBSERVATIONS OF HERCULES X-1 FROM UHURU [J]. ASTROPHYSICAL JOURNAL, 1973, 184 (01) : 227 - 236

[20] GURSKY H, 1975, VARIABLE STARS STELL, P413