1. Barilotti, D. C., R. H. McPeak & P. K. Dayton, 1985. Experimental studies on the effects of commercial kelp harvesting in central and southern California Macrocystis pyrifera kelp beds. Calif. Fish Game 71: 4?20.
2. Brandt, R. P., 1923. Potash from kelp: Early development and growth of the giant kelp Macrocystis pyrifera. U. S. Dept. Agr. Bull. 1191, 40 pp.
3. Clendenning, K. A., 1968. Harvesting effects on canopy invertebrates and on kelp plants. In W. J. North & C. L. Hubbs (eds). Utilization of Kelp-bed Resources in Southern California. Calif Dept. Fish Game, Fish. Bull. 139: 219?222.
4. Coon, D., 1981. Measurements of harvested and unharvested populations of the marine crop plant Macrocystis. Proc. int. Seaweed Symp. 8: 678?687.
5. Dawes, C. J., N. F. Stanley & D. J. Stancioff, 1977. Seasonal and reproductive aspects of plant chemistry, and i-carrageenan from floridian Eucheuma (Rhodophyta, Gigartinales). Bot. mar. 20:137?147.