Willson, Mary (). Fenner, M., ed. „The Ecology of Seed Dispersal”. Seeds: The Ecology of Regeneration in Plant Communities (ed. 2nd): 85–110. doi:10.1079/9780851994321.0085. ISBN9780851994321.
Soltis, Douglas E.; Fishbein, Mark; Kuzoff, Robert K. (). „Evolution of Epigyny”. International Journal of Plant Sciences. 164 (S5): S251–S264. doi:10.1086/376876.