1. Potamogetonaceae fruits. 1. Recent and subfossil endocarps of Fennoscandian species;Aalto;Acta Botanica Fennica,1970
2. Growth limiting nutrients in Sphagnum dominated bogs subject to low and high atmospheric nitrogen supply;Aerts;Journal of Ecology,1992
3. Atlas of Seeds and Small Fruits of Northwest European Plant Species with Morphological Descriptions;Anderberg,1994
4. Fossil remains of the mycorrhizal fungal Glomus fasciculatum complex in postglacial lake sediments from Maine;Anderson;Canadian Journal of Botany,1984
5. Vertical zonation of Sphagnum mosses along hummock–hollow gradients;Andrus;Canadian Journal of Botany,1983