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- [5] Chandrasekharaiah M. S., 1967, CHARACTERIZATION HIG, P495
- [6] DONN N, 1968, ASTROPHYS J, V153, P451
- [7] Eucken A, 1944, NACHR AKAD WISS G MP, P1
- [9] FERNALD DL, 1969, METEORITICS, V4, P270
- [10] INFRARED OBSERVATIONS OF PLANETARY NEBULA NGC 7027 [J]. ASTROPHYSICAL JOURNAL, 1967, 149 (3P2) : L97 - &