Discussions of color index and spectral type

[1] Obscuration around the North Pole [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1942, 102 (01) : 0261 - 0267

[2] ROSS, 1930, AN, V239, P289

[3] SEARES, 1930, AP J, V72, P311

[4] SEARES, MT W CONTR, V415

[5] SEARES, 1941, CARNEGIE I PUBLICATI, V532

[6] Selective absorption of starlight by interstellar clouds [J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1936, 22 : 327 - 331

[7] The magnitude scale of the bright polar standards [J]. ASTROPHYSICAL JOURNAL, 1941, 94 (01) : 21 - 26

[8] Relation of color to intrinsic luminosity in stars of the same spectral type [J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1919, 5 : 232 - 238

[9] SEARES FH, MT W COMM, V59

[10] SEARES FH, MT W COMM, V119

[1] Obscuration around the North Pole [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1942, 102 (01) : 0261 - 0267

[2] ROSS, 1930, AN, V239, P289

[3] SEARES, 1930, AP J, V72, P311

[4] SEARES, MT W CONTR, V415

[5] SEARES, 1941, CARNEGIE I PUBLICATI, V532

[6] Selective absorption of starlight by interstellar clouds [J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1936, 22 : 327 - 331

[7] The magnitude scale of the bright polar standards [J]. ASTROPHYSICAL JOURNAL, 1941, 94 (01) : 21 - 26

[8] Relation of color to intrinsic luminosity in stars of the same spectral type [J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1919, 5 : 232 - 238

[9] SEARES FH, MT W COMM, V59

[10] SEARES FH, MT W COMM, V119