0. DOCID:22416 1972 "X-ray Astronomy: Observations of New Phenomena" 0.0291949095841027<br>
1. DOCID:22167 1971 "Stellar Old Age (III): Black Holes and Gravitational Collapse" 0.0237139080472178<br>
2. DOCID:21376 1968 "X-ray Structures of the Sun during the Importance 1N Flare of 8 June 1968" 0.0208843800918375<br>
3. DOCID:21427 1968 "Astronomical Research with the Large Space Telescope" 0.0196674548746518<br>
4. DOCID:21379 1968 "Cosmic Rays from Nearby Supernovae: Biological Effects" 0.0152241792318399<br>
5. DOCID:21096 1967 "Ultraviolet Spectra of Stars" 0.0139642209481122<br>
6. DOCID:21054 1967 "Radio Sources in the Vicinity of Source M 31" 0.0139158098930912<br>
7. DOCID:21534 1969 "Venus: Absence of a Phase Effect at a 2-Centimeter Wavelength" 0.0134099517925083<br>
8. DOCID:22007 1971 "Interstellar Molecules and Dense Clouds" 0.0129749222895245<br>
9. DOCID:21068 1967 "Stellar Evolution: Comparison of Theory with Observation" 0.0116453907368242<br>
10. DOCID:20834 1966 "Ancient Oriental Records of Novae and Supernovae" 0.0111623726158394<br>
11. DOCID:21239 1967 "X-rays from Sources 3C 273 and M 87" 0.0109417209201116<br>
12. DOCID:21424 1968 "Detection of Lyman-$\beta $ and Helium Resonance Radiation in the Night Sky" 0.0103279183815058<br>
13. DOCID:21985 1970 "Asteroid Vesta: Spectral Reflectivity and Compositional Implications" 0.00982310736754544<br>
14. DOCID:21670 1969 "Polar Temperature of Venus" 0.00976414517178223<br>