1. Aario L (1940) Waldgrenzen und subrezente Pollenspektren. Annal Acad Sci Fennicae A54:120
2. Ammann B (1994) Differential flotation of saccate pollen – a nuisance and a chance. Diss Bot 234:101–110
3. Andersen ST (1970) The relative pollen productivity and pollen representation of north European trees, and correction factors for tree pollen spectra. Danmarks Geologiske Undersøgelse (II Række) 96:1–99
4. Berglund BE (1973) Pollen dispersal and deposition in an area of southeastern Sweden – some preliminary results. In: Birks HJB, West RG (eds) Quaternary plant ecology. Blackwell, Oxford, pp 117–129
5. Birks HH (1973a) Modern macrofossil assemblages in lake sediments in Minnesota. In: Birks HJB, West RG (eds) Quaternary plant ecology. Blackwell, Oxford, pp 172–189