• Bailey, N. T. J. (1959). Statistical Methods in Biology. English Universities Press, London .
  • Benninghoff, W. S. (1962). Calculation of pollen and spore density in sediments by addition of exotic pollen in known quantities. (Abstract). Pollen Spores, 4(2), 232.
  • Crow, E. L. & Gardner, R. S. (1959). Confidence intervals for the expectation of a Poisson variable. Biometrika, 46, 441.
  • Davis, M. B. (1965). A method for determination of absolute pollen frequency. In: Handbook of Paleontological Techniques (Ed. by B.Kummel and D.Raup). Freeman, San Francisco , pp. 674686.
  • Davis, M. B. (1966). Determination of absolute pollen frequency. Ecology, 47(2), 310.
  • Deevey, E. S. JR. & Potzger, J. E. (1951). Peat samples for radiocarbon analysis: problems in pollen statistics. Am. J. Sci., 249, 473.
  • Elliott, J. M. (1970). Some methods for the statistical analysis of samples of benthic invertebrates. Scient. Publs Freshwat. biol. Ass. No. 25.
  • Faegri, K. & Iversen, J. (1964). A Textbook of Pollen Analysis. Munksgaard, Copenhagen . Blackwell Scientific Publications, Oxford .
  • Faegri, K. & Ottestad, P. (1948). Statistical problems in pollen analysis. Univ. Bergen Arb., Naturv. rk. 3.
  • Jørgensen, S. (1967). A method of absolute pollen counting. New Phytol, 66, 489.
  • Kendall, M. G. & Stuart, A. (1961). The Advanced Theory of Statistics, Vol. 2 Griffin, London .
  • Lund, J. W. G., Kipling, C. & Le Cren, E. D. (1958). The inverted microscope method of estimating algal numbers and the statistical basis of estimations by counting. Hydrobiologia, 11 (2), 143.
  • Matthews, J. (1969). The assessment of a method for the determination of absolute pollen frequencies. New Phytol, 68, 161.
  • Pennington, W. (1970). In: Studies in the Vegetation History of the British Isles (Ed. by D.Walker and R. G.West), pp. 4180. Cambridge University Press, London .
  • Pennington, W. & Bonny, A. P. (1970). An absolute pollen diagram from the British late-glacial. Nature, Lond., 226, 871.
  • Rohlf, R. R. & Sokal, F. J. (1969). Statistical Tables. (Companion volume to Sokal, F. J. & Rohlf, R. R. (1969). Biometry, the Principles and Practice of Statistics in Biological Research.) Freeman, San Francisco .
  • Snedecor, G. W. & Cochran, W. G. (1967). Statistical Methods. Iowa State University Press.
  • Waddington, J. C. B. (1969). A stratigraphic record of the pollen influx to a lake in the Big Woods of Minnesota. (Special Paper.) Bull. Geol. Soc. Am., 123, 263.