1. Carnivorous plants: phylogeny and structural evolution;Albert;Science,1992
2. First protozoa-trapping plant found;Barthlott;Nature,1998
3. Karnivoren: Biologie und Kultur Fleischfressender Pflanzen;Barthlott,2004
4. Barthlott, W., Porembski, S., Seine, R., Theisen, I., in press. Carnivorous plants. Biology and cultivation. Timber Press, Portland.
5. Bau und Entwicklung landbewohnender Utricularia-Arten;Brugger;Bot. Helv.,1989