OPTICAL IDENTIFICATION RADIO SOURCES SELECTED FROM C-4 CATALOGUE

[11] ACCURATE POSITIONS OF SELECTED 4C SOURCES [J]. ASTRONOMICAL JOURNAL, 1967, 72 (06) : 738 - &

[12] Pilkington J. D. H., 1965, MMRAS, V69, P183

[13] SCHMIDT M, 1967, PRIVATE COMMUNICATIO

[14] SEARES FH, 1930, MT WILSON CATALOG SE

[15] PHOTOELECTRIC MAGNITUDES AND COLORS OF STARS IN SELECTED AREAS 57, 61, AND 68 [J]. ASTROPHYSICAL JOURNAL, 1950, 112 (03) : 469 - 476

[16] WILLIAMS PJ, 1967, OBSERVATORY, V87, P108

[17] WILLS D, 1966, OBSERVATORY, V86, P245

[18] WILLS D, 1967, MON NOT R ASTRON SOC, V135, P339

[19] OPTICAL IDENTIFICATION OF RADIO SOURCES IN 3C REVISED CATALOGUE [J]. ASTROPHYSICAL JOURNAL, 1966, 144 (02) : 459 - &

[20] A SEARCH FOR OPTICAL OBJECTS ASSOCIATED WITH 50 RADIO SOURCES [J]. ASTRONOMICAL JOURNAL, 1965, 70 (05) : 384 - &

[11] ACCURATE POSITIONS OF SELECTED 4C SOURCES [J]. ASTRONOMICAL JOURNAL, 1967, 72 (06) : 738 - &

[12] Pilkington J. D. H., 1965, MMRAS, V69, P183

[13] SCHMIDT M, 1967, PRIVATE COMMUNICATIO

[14] SEARES FH, 1930, MT WILSON CATALOG SE

[15] PHOTOELECTRIC MAGNITUDES AND COLORS OF STARS IN SELECTED AREAS 57, 61, AND 68 [J]. ASTROPHYSICAL JOURNAL, 1950, 112 (03) : 469 - 476

[16] WILLIAMS PJ, 1967, OBSERVATORY, V87, P108

[17] WILLS D, 1966, OBSERVATORY, V86, P245

[18] WILLS D, 1967, MON NOT R ASTRON SOC, V135, P339

[19] OPTICAL IDENTIFICATION OF RADIO SOURCES IN 3C REVISED CATALOGUE [J]. ASTROPHYSICAL JOURNAL, 1966, 144 (02) : 459 - &

[20] A SEARCH FOR OPTICAL OBJECTS ASSOCIATED WITH 50 RADIO SOURCES [J]. ASTRONOMICAL JOURNAL, 1965, 70 (05) : 384 - &