1. A bloom of Tympanicysta Balme (green algae of zygnematalean affinities) at the Permian-Triassic boundary;Afonin;Geodiversitas,2001
2. Synopsis Algarum Scandinaviae, Adjecta Dispositione Universali Algarum;Agardh,1817
3. Systema Algarum;Agardh,1824
4. Preliminary investigations on the chemical composition of the scale-boundary and cyst wall of Pyramimonas pseudoparkeae (Prasinophyceae);Aken;S. Afr. J. Bot.,1985
5. A checklist of Rhizoctonia epithets;Andersen;Mycotaxon,1994