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- [21] STUDIES OF LUMINOUS STARS IN NEARBY GALAXIES .3. COMMENTS ON THE EVOLUTION OF THE MOST MASSIVE STARS IN THE MILKY-WAY AND THE LARGE MAGELLANIC CLOUD ASTROPHYSICAL JOURNAL, 1979, 232 (02): : 409 - 420
- [22] STEPS TOWARD HUBBLE CONSTANT .7. DISTANCES TO NGC 2403, M101, AND VIRGO CLUSTER USING 2U CENTIMETER LINE WIDTHS COMPARED WITH OPTICAL METHODS - GLOBAL VALUE OF HO ASTROPHYSICAL JOURNAL, 1976, 210 (01): : 7 - &