NEUTRAL HYDROGEN IN M33

[1] BAADE W, 1955, ASTRON J, V60, P151, DOI 10.1086/107181

[2] THE PERIOD-LUMINOSITY RELATION OF THE CEPHEIDS [J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1956, 68 (400) : 5 - 16

[3] USE OF A Y-TYPE CIRCULATOR SWITCH WITH A 21-CENTIMETER MASER RADIOMETER [J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 1961, 32 (02) : 202 - &

[4] DANVER G, 1942, ANN OBS LUND

[5] DIETER NH, 1958, THESIS HARVARD

[6] OBSERVATIONS OF 60 DISCRETE SOURCES AT 1423 MC [J]. ASTRONOMICAL JOURNAL, 1962, 67 (03) : 171 - &

[7] HOLMBERG E, 1958, LUND MEDD 2

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

[9] AN OPERATIONAL RUBY MASER FOR OBSERVATIONS AT 21 CENTIMETERS WITH A 60-FOOT RADIO TELESCOPE [J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 1961, 32 (02) : 166 - &

[10] OBSERVATIONS OF THE 21 CM LINE FROM THE MAGELLANIC CLOUDS [J]. AUSTRALIAN JOURNAL OF PHYSICS, 1954, 7 (02): : 297 - &

[1] BAADE W, 1955, ASTRON J, V60, P151, DOI 10.1086/107181

[2] THE PERIOD-LUMINOSITY RELATION OF THE CEPHEIDS [J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1956, 68 (400) : 5 - 16

[3] USE OF A Y-TYPE CIRCULATOR SWITCH WITH A 21-CENTIMETER MASER RADIOMETER [J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 1961, 32 (02) : 202 - &

[4] DANVER G, 1942, ANN OBS LUND

[5] DIETER NH, 1958, THESIS HARVARD

[6] OBSERVATIONS OF 60 DISCRETE SOURCES AT 1423 MC [J]. ASTRONOMICAL JOURNAL, 1962, 67 (03) : 171 - &

[7] HOLMBERG E, 1958, LUND MEDD 2

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

[9] AN OPERATIONAL RUBY MASER FOR OBSERVATIONS AT 21 CENTIMETERS WITH A 60-FOOT RADIO TELESCOPE [J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 1961, 32 (02) : 166 - &

[10] OBSERVATIONS OF THE 21 CM LINE FROM THE MAGELLANIC CLOUDS [J]. AUSTRALIAN JOURNAL OF PHYSICS, 1954, 7 (02): : 297 - &