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WIDE SPECTRUM H₂O SOURCES - ASTROPHYSICAL RAMAN MASERS.RADHAKRISHNAN V; GOSS WM; RAJENDRA BHANDARI et al.1975; PRAMANA; INDIA; DA. 1975; VOL. 5; NO 2; PP. 49-58; BIBL. 22 REF.Article

OBSERVATIONS OF RADIO RECOMBINATION LINES AT EQUIV. A 300 MHZ.PARRISH A; CONKLIN EK; PANKONIN V et al.1977; ASTR. AND ASTROPHYS.; GERM.; DA. 1977; VOL. 58; NO 3; PP. 319-323; BIBL. 15 REF.Article

The structure of the W49A molecular cloud complex: burst of star formation in the 10⁵ M_○. coreMIYAWAKI, R; HAYASHI, M; HASEGAWA, T et al.The Astrophysical journal. 1986, Vol 305, Num 1, pp 353-362, issn 0004-637X, 1Article

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APERTURE SYNTHESIS OBSERVATIONS OF GALACTIC H II-REGIONS.WINK JE; ALTENHOFF WJ; WEBSTER WJ JR et al.1975; ASTR. AND ASTROPHYS.; GERM.; DA. 1975; VOL. 38; NO 1; PP. 109-128; BIBL. 32 REF.Article

THE STRUCTURE OF W49A AS DEDUCED FROM MOLECULAR AND RECOMBINATION LINE OBSERVATIONS.MUFSON SL; LISZT HS.1977; ASTROPHYS. J.; U.S.A.; DA. 1977; VOL. 212; NO 3 PART. 1; PP. 664-682; BIBL. 48 REF.Article