Schofield, O., Prézelin, B.B., Smith, R.C., Stegmann, P.M., Nelson, N.B., Lewis, M.R. and Baker, K.S. (1991). Variability in spectral and nonspectral measurements of photosynthetic light utilization efficiencies. Mar. Ecol. Prog. Ser., 78: 253-271.
Schofield, O., Prézelin, B.B., Smith, R.C., Stegmann, P.M., Nelson, N.B., Lewis, M.R. and Baker, K.S. (1991). Variability in spectral and nonspectral measurements of photosynthetic light utilization efficiencies. Mar. Ecol. Prog. Ser., 78: 253-271.