1. Wyckoff RWG (1972) The biochemistry of animal fossils. Scientechnica Ltd., 152p.
2. Goodman DE, Birk AE, Romero-Herrera MA, Lande HD, Barnhart MI (1980) FEBS Lett 114: 30–34.
3. Tuross N, Hare PE (1978) Carnegie Inst. Year Book 77: 891–895.
4. Tuross N, Eyre DR, Holtrop ME, Glimcher MJ, Hare PE (1980) In:Hare PE, Hoering TC, King K Jr (eds) Biochemistry of Amino Acids. Wiley, pp. 53–63.
5. Akagi S (1981) Sci Rep Fac Sci Tottori Univ 30: 57–64.