1. Elektronenmikroskopische Untersuchungen an den Ölzellen von Acorus calamus L. Z;Amelunxen;Pflanzenphysiol,1969
2. A survey of oil cells in the dicotyledons with comments on their replacement by and joint occurrence with mucilage cells;Baas;Israel J. Bot.,1985
3. A suberized layer in the cell wall of mucilage cells in Cinnamomum;Bakker;Ann. Bot.,1989
4. Ultrastructure and development of oil idioblasts in Annona muricata L;Bakker;Ann. Bot.,1990
5. The development of mucilage cells in Hibiscus schizopetalus;Bakker;Acta Bot. Neerl,1992