1. K.Faegri and J.Iversen, Textbook of Pollen Analysis, Blackwell, Oxford, UK, 1964
2. G.Shaw, in Phytochemical Phylogeny, ed. J. B. Harborne, Academic Press, London, UK, 1970, pp. 31-35
3. G.Shaw, in Sporopollenin, eds. J. BrooksP. R. GrantM. MuirP. Van Gijzel and G. Shaw, Academic Press, London & New York, 1971, pp. 305-348
4. P. F.Van Bergen, P.Blokker, M. E.Collinson, J. S.Sinninghe Damsté and J. W.De Leeuw, in The Evolution of Plant Physiology. From wholes plants to ecosystems, eds. A. R. Hemsley, and I. Poole, Elsevier Academic Press, London, UK, 2004, pp. 133-154
5. Untersuchungen über die Membran der Sporen und Pollen. I. 1. Lycopodium clavatum L