1ST OBSERVATION OF A QUASAR WITH A REDSHIFT OF 4

[1] [Anonymous], 1983, UKSTU HDB

[2] BOYLE BJ, MON NOT R ASTR SOC

[3] BUNCLARK PS, 1983, ESA SP201, P195

[4] A QSO WITH REDSHIFT 3.8 FOUND ON A UK SCHMIDT TELESCOPE-IIIA-F PRISM PLATE [J]. NATURE, 1986, 322 (6074) : 38 - 40

[5] IRWIN MJ, 1985, MEASURING MACHINES, P5

[6] KIBBLEWHITE EJ, 1983, P ASTRONOMICAL MICRO, P277

[7] QUASARS TO B GREATER-THAN 22.5 IN SELECTED AREA-57 - A CATALOG OF MULTICOLOR PHOTOMETRY, VARIABILITY, AND ASTROMETRY [J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1986, 98 (601) : 285 - 306

[8] EVIDENCE FOR A DECREASE IN THE SPACE DENSITY OF QUASARS AT Z GREATER-THAN-OR-EQUAL-TO 3.5 [J]. ASTROPHYSICAL JOURNAL, 1982, 253 (01) : 28 - 37

[9] SPECTRUM OF A QSO WITH REDSHIFT 3.8 [J]. NATURE, 1986, 322 (6074) : 40 - 42

[10] SPECTROSCOPIC CCD SURVEYS FOR QUASARS AT LARGE REDSHIFT .2. A PFUEI TRANSIT SURVEY [J]. ASTROPHYSICAL JOURNAL, 1986, 310 (02) : 518 - 533

[1] [Anonymous], 1983, UKSTU HDB

[2] BOYLE BJ, MON NOT R ASTR SOC

[3] BUNCLARK PS, 1983, ESA SP201, P195

[4] A QSO WITH REDSHIFT 3.8 FOUND ON A UK SCHMIDT TELESCOPE-IIIA-F PRISM PLATE [J]. NATURE, 1986, 322 (6074) : 38 - 40

[5] IRWIN MJ, 1985, MEASURING MACHINES, P5

[6] KIBBLEWHITE EJ, 1983, P ASTRONOMICAL MICRO, P277

[7] QUASARS TO B GREATER-THAN 22.5 IN SELECTED AREA-57 - A CATALOG OF MULTICOLOR PHOTOMETRY, VARIABILITY, AND ASTROMETRY [J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1986, 98 (601) : 285 - 306

[8] EVIDENCE FOR A DECREASE IN THE SPACE DENSITY OF QUASARS AT Z GREATER-THAN-OR-EQUAL-TO 3.5 [J]. ASTROPHYSICAL JOURNAL, 1982, 253 (01) : 28 - 37

[9] SPECTRUM OF A QSO WITH REDSHIFT 3.8 [J]. NATURE, 1986, 322 (6074) : 40 - 42

[10] SPECTROSCOPIC CCD SURVEYS FOR QUASARS AT LARGE REDSHIFT .2. A PFUEI TRANSIT SURVEY [J]. ASTROPHYSICAL JOURNAL, 1986, 310 (02) : 518 - 533