Hollingsworth, Peter M., ed. Bateman, Richard M., 1940- ed. Gornall, R. J., ed. Conference on Advances in Plant Molecular Systematics (1997 : University of Glasgow)

Hoch, Peter C., ed. Stephenson, Andrew G., ed. International Organization of Plant Biosystematists. International Symposium (5th : 1992 : Saint Louis, Mo.)