1. Åkerman, Å.: Untersuchungen über die Aggregation in den Tentakeln von Drosera rotundifolia. Bot. Not. 1917, 145?192 (1917)
2. Buvat, R.: Origin and continuity of cell vacuoles. In: Origin and continuity of cell organelles, pp. 122?157, Reinert, J., Ursprung, H., eds. Berlin, Heidelberg, New York: Springer 1971
3. Campbell, N.A., Thomson, W.W.: Multivacuolate motor cells in Mimosa pudica L. Ann. Bot. 41, 1361?1362 (1977)
4. Guyot, M., Humbert, C.: Les modifications du vacuome des cellules stomatiques d'Anemia rotundifolia Schrad. C.R. Acad. Sci. Paris 270, 2787?2790 (1970)
5. Karnovsky, M.J.: A formaldehyde-glutaraldehyde fixative of high osmolarity for use in electron microscopy (Abstr.) J. Cell biol. 27, 137 A (1965)