1. The role of unicells in the polymorphic Scenedesmus armatus (Chlorophyceae);Egan;J. Phycol,1989a
2. Low cell density: the unifying principle for unicell development in Scenedesmus (Chlorophyceae);Egan;Brit. Phycol. J,1989b
3. The effect of media and inoculum size on the growth and morphological development of Scenedesmus communis Hegew. (Chlorophyceae) in culture;Egan;Arch. Hydrobiol,1989c
4. Phenotypic plasticity in Scenedesmus communis Hegew. (Chlorophyceae). II. Examples of algal cyclo- and noncyclomorphosis;Egan;Amer. J. Bot.,1991
5. Taxonomie der Arten Chlorella ultrasquamata Clém. et Fott und Chlorella fusca Shih. et Krauss;Fott;Arch. Protistenk,1975