Ralph D. Lorenz, Jonathan I. Lunine, Christopher P. McKay (1997年). “Titan under a red giant sun: A new kind of "habitable" moon” (PDF). NASA Ames Research Center, Lunar and Planetary Laboratory, Department of Planetary Sciences, University of Arizona. 2008年3月21日閲覧。
Khlifi M, Nollet M, Paillous P, Bruston P, Raulin F, Bénilan Y, Khanna RK (1999). “Absolute Intensities of the Infrared Bands of Gaseous Acrylonitrile”. J Mol Spectrosc194: 206–210. doi:10.1006/jmsp.1998.7795. PMID10079158.
Committee on the Limits of Organic Life in Planetary Systems, Committee on the Origins and Evolution of Life, National Research Council; [1]; The National Academies Press, 2007; page 74
Committee on the Limits of Organic Life in Planetary Systems, Committee on the Origins and Evolution of Life, National Research Council; The Limits of Organic Life in Planetary Systems; The National Academies Press, 2007; page 74.
Committee on the Limits of Organic Life in Planetary Systems, Committee on the Origins and Evolution of Life, National Research Council; [2]; The National Academies Press, 2007; pages 74-75
Khlifi M, Nollet M, Paillous P, Bruston P, Raulin F, Bénilan Y, Khanna RK (1999). “Absolute Intensities of the Infrared Bands of Gaseous Acrylonitrile”. J Mol Spectrosc194: 206–210. doi:10.1006/jmsp.1998.7795. PMID10079158.