References:
Asen S, Thompson JF, Morris CJ, Irreverre F. Isolation of β-Aminoisobutyric Acid from Bulbs of Iris tingitana var. Wedgewood. J Biol Chem. 1959 Jan 2;234(2):343–6.
References:
Plaxco KW, Gross M. Astrobiology: A Brief Introduction. Baltimore: Johns Hopkins University Press; 2011. p87.
Ehrenfreund P, Glavin DP, Botta O, Cooper G, Bada JL. Extraterrestrial amino acids in Orgueil and Ivuna: Tracing the parent body of CI type carbonaceous chondrites. PNAS. 2001 Feb 27;98(5):2138–41.