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- [24] ENERGY-DEPENDENCE OF SIZE OF X-RAY SOURCE IN CRAB-NEBULA ASTROPHYSICAL JOURNAL, 1976, 204 (02): : L77 - L81
- [25] SEARCH FOR THERMAL X-RAY LINE EMISSION FROM CRAB-NEBULA ASTROPHYSICAL JOURNAL, 1977, 216 (01): : L27 - L29
- [26] X-RAY SPECTRAL FEATURES OF CRAB-NEBULA AND NP0532 NATURE-PHYSICAL SCIENCE, 1973, 246 (155): : 109 - 111
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- [29] HIGH-ENERGY X-RAY OBSERVATIONS OF A LUNAR OCCULTATION OF CRAB-NEBULA ASTROPHYSICAL JOURNAL, 1975, 197 (02): : L83 - &