1. Armisen, R. & F. Galatas, 1987. Production, properties and uses of agar. In McHugh D.J. (ed.), Production, properties and uses of agar. In McHugh D.J. (ed.), Production and Utilization of Products from Commercial Seaweeds. FAO Fish. Tech. Pap. 288: 1?57.
2. Funaki, K. & Y. Kojima, 1951. Studies on the preparation of agar-agar from Gracilaria confervoides. 1. Bull. Jap. Soc. Sci. Fish. 16: 401?404.
3. Gallardo, T., M. A. Cobelas & A. A. de Meneses, 1990. Current state of seaweed resources in Spain. Hydrobiologia 204/205: 287?292.
4. Japan, 1990. Fisheries and Aquaculture Statistics Yearbook 1988. Statistics and Information Department, Japan Ministery of Agriculture, Forestry and Fisheries, Tokyo.
5. McHugh, D. J., 1987. Production, properties and uses of alginates. In McHugh D. J. (ed.), Production and Utilization of Products from Commercial Seaweeds. FAO Fish. Tech. Pap. 288: 58?115.