BedauM.A., ClelandC.E.2010. The Nature of Life: Classical and Contemporary Perspectives from Philosophy and Science. Cambridge University Press: Cambridge.
2.
LazcanoA.2010. Historical development of origins research. Cold Spring Harb Perspect Biol, 2. 10.1101/cshperspect.a002089.
3.
TsokolovS.A.2009. Why is the definition of life so elusive? Epistemological considerations. Astrobiology, 9:401–412.
4.
WardP.D., BennerSA.2007. Alien biochemistries. Planets and Life: The Emerging Science of Astrobiology. SullivanW.T.III, BarossJ.A.Cambridge University Press: Cambridge, 537–544.
5.
ClelandC.E., ChybaC.F.2002. Defining life. Orig Life Evol Biosph, 32:387–393.
6.
GayonJ., MalaterreC., MorangeM., Raulin-CerceauM., TirardS. 2010. Special issue: defining life. Orig Life Evol Biosph, 40:119–244.
7.
LahavN.1999. Biogenesis: Theories of Life's Origin. Oxford University Press: New York.
8.
PopaR.2004. Between Necessity and Probability: Searching for the Definition and Origin of Life. Springer-Verlag: Berlin.