^Fumagalli، M.؛ Krumholz، M.R.؛ Prochaska، J.X؛ Gavazzi، G.؛ Boselli، A. (2009). "Molecular Hydrogen Deficiency in H I-poor Galaxies and its Implications for Star Formation". The Astrophysical Journal. ج. 697 ع. 2: 1811–1821. arXiv:0903.3950. Bibcode:2009ApJ...697.1811F. DOI:10.1088/0004-637X/697/2/1811.