Measures, C. I., McDuff, R. E., and Edmond, J. M., 1980. Selenium redox chemistry at GEOSECS I re-occupation. Earth Planet. Sci. Lett. 49: 102-108. 

Measures, C. I., and Burton, J. D., 1980. The vertical distribution and oxidation states of dissolved selenium in the northeast Atlantic Ocean and their relationship to biological processes. Earth Planet. Sci. Lett. 46: 385-396.