1. (1990) Physical chemistry of surfaces. 5th., Wiley, London.
2. (1990) Scanning electron microscopy of the epidermal surface in plants. In: (Hrsg.): Scanning electron microscopy in taxonomy and function morphology, Systematics Association Special Volume No. 41, Clarendon Press, Oxford 69-94.
3. Waterlily, poppy, or sycamore: on the systematic position of Nelumbo
4. Purity of the sacred lotus, or escape from contamination in biological surfaces