STELLAR CONTENT AND DISTANCE OF GALAXY NGC 2403 IN M81 GROUP

[21] SURFACE PHOTOMETRY OF THE GLOBULAR CLUSTERS 47 TUCANAE AND OMEGA-CENTAURI [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1956, 116 (05) : 570 - 579

[22] GRATTON L, 1963, STAR EVOLUTION, P297

[23] REVISED PHOTOMETRY OF FIELD STARS IN LARGE MAGELLANIC CLOUD [J]. ASTROPHYSICAL JOURNAL, 1965, 141 (02) : 806 - &

[24] HODGE PW, 1961, ASTROPHYS J S, V6, P235

[25] HOLMBERG E, 1958, MEDD LUNDS OBS

[26] HOLMBERG E, 1950, MEDD LUNDS OBS 2

[27] Nebulous objects in Messier 31 provisionally identified as globular clusters [J]. ASTROPHYSICAL JOURNAL, 1932, 76 (01) : 44 - 69

[28] THE BRIGHTEST VARIABLE STARS IN EXTRAGALACTIC NEBULAE .1. M31 AND M33 [J]. ASTROPHYSICAL JOURNAL, 1953, 118 (03) : 353 - &

[29] REDSHIFTS AND MAGNITUDES OF EXTRAGALACTIC NEBULAE [J]. ASTRONOMICAL JOURNAL, 1956, 61 (03) : 97 - +

[30] HUMASON ML, 1957, CARNEGIE YB, P58

[21] SURFACE PHOTOMETRY OF THE GLOBULAR CLUSTERS 47 TUCANAE AND OMEGA-CENTAURI [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1956, 116 (05) : 570 - 579

[22] GRATTON L, 1963, STAR EVOLUTION, P297

[23] REVISED PHOTOMETRY OF FIELD STARS IN LARGE MAGELLANIC CLOUD [J]. ASTROPHYSICAL JOURNAL, 1965, 141 (02) : 806 - &

[24] HODGE PW, 1961, ASTROPHYS J S, V6, P235

[25] HOLMBERG E, 1958, MEDD LUNDS OBS

[26] HOLMBERG E, 1950, MEDD LUNDS OBS 2

[27] Nebulous objects in Messier 31 provisionally identified as globular clusters [J]. ASTROPHYSICAL JOURNAL, 1932, 76 (01) : 44 - 69

[28] THE BRIGHTEST VARIABLE STARS IN EXTRAGALACTIC NEBULAE .1. M31 AND M33 [J]. ASTROPHYSICAL JOURNAL, 1953, 118 (03) : 353 - &

[29] REDSHIFTS AND MAGNITUDES OF EXTRAGALACTIC NEBULAE [J]. ASTRONOMICAL JOURNAL, 1956, 61 (03) : 97 - +

[30] HUMASON ML, 1957, CARNEGIE YB, P58