Silva S. , Nelson, E. Walter Helbling, Virginia Villafañe, Anthony F. Amos, and Osmund Holm-Hansen. 1995. “Variability in Nutrient Concentrations Around Elephant Island, Antarctica, During 1991-1993”. Polar Research 14 (1):69-82. https://doi.org/10.3402/polar.v14i1.6652.