1. Almgren, T., D. Dyrssen and S. Fonselius, 1983. Determination of alkalinity and total carbonate. In Grasshoff, K., M. Ehrhardt and K. Kremling, (eds), Methods of Sea Water Analysis. Verlag Chemie GmbH, Weinheim: 99–107.
2. Andría, J. R., J. L. Pérez-Lloréns and J. J. Vergara, 1999. Mechanisms of inorganic carbon acquisition in Gracilaria gaditana nom. prov. ( Rhodophyta ). Planta 208: 564–573.
3. Axelsson, L., 1988. Changes in pH as a measure of photosynthesis by marine macroalgae. Mar. Biol. 97: 287–294.
4. Axelsson, L. and J. Uusitalo, 1988. Carbon acquisition strategies for marine macroalgae. I. Utilization of proton exchanges visualized during photosynthesis in a closed system. Mar. Biol. 97: 295–300.
5. Axelsson, L., J. M. Mercado and F. L. Figueroa, 2000. Utilization of HCO−3 at high pH by the brown macroalga Laminaria saccharina. Eur. J. Phycol. 35: 53–59.