1. Dayhoff, M. D.: Atlas of protein sequence and structure, vol. 5. Washington: National Biomedical Research Foundation 1972.
2. Gottschalk, A.: Glycoproteins, 2nd ed. Amsterdam: Elsevier 1972.
3. Hunt, L. T., Dayhoff, M. O.: Biochem. biophys. Res. Commun.39, 757 (1970).
4. Hunt, S.: Polysaccharide-protein complexes in invertebrates. NewYork: Academic Press 1970.
5. Kimura, M., Ohta, T.: submitted to Nature.