1. BEYERS, R.J., THE USE OF CARBON DIOXIDE TO CONSTRUCT PH CURVES FOR THE MEASUREMENT OF PRODUCTIVITY, LIMNOLOGY AND OCEANOGRAPHY 4: 499 (1959).
2. Beyers, R. J., Publ. Inst. Mar. Sci., University Tex. 9:454 (1963).
3. BILLIG, E, THE EFFICIENCY OF THE SELENIUM BARRIER-PHOTOCELL WHEN USED AS A CONVERTER OF LIGHT INTO ELECTRICAL ENERGY, PHILOSOPHICAL MAGAZINE 40: 568 (1949).
4. ODUM, H. T., AMERICAN SCIENTIST 43: 331 (1955).
5. Algal Mat Communities of Lyngbya confervoides (C. Agardh) Gomont;PUBLICATIONS OF THE INSTITUTE OF MARINE SCIENCE,1962