Y.  Ogura-Tsujita, Gebauer, G., Hashimoto, T., Umata, H., and Yukawa, T., ?Evidence for novel and specialized mycorrhizal parasitism: the orchid Gastrodia confusa gains carbon from saprotrophic Mycena?, Proc. Roy. Soc. London, Ser. B, Biol. Sci., vol. 277, pp. 1333 - 1336, 2009.

D. D.  Cameron, Preiss, K., Gebauer, G., and Read, D. J., ?The chlorophyll-containing orchid Corallorhiza trifida derives little carbon through photosynthesis?, New Phytologist, vol. 183, pp. 358 - 364, 2009.

N. A.  Hynson, Preiss, K., Gebauer, G., and Bruns, T. D., ?Isotopic evidence of full and partial myco-heterotrophy in the plant tribe Pyroleae (Ericaceae)?, New Phytol., vol. 182, pp. 719 - 726, 2009.