1. Linderstrom-Lang, K.: 1955, Chem. Soc. (London), Spec. Publ. 2, 1.
2. Linderstrom-Lang, K: 1958, in Symposium on Protein Structure (ed. by A. Neuberg), Methuen, London, p. 23.
3. Hvidt, Aa. and Nielsen, S. O.: 1966, Advan. Prot. Chem. 21, 287.
4. Ottesen, M.: 1971, in Methods of Biochemical Analysis (ed. by D. Glick), Vol. 20, Wiley-Interscience, p. 135.
5. Willumsen, L.: 1971, C.R. Trav. Lab. Carlsberg 38, 14, 223.