Povilus, RA; Losada, JM; Friedman, WE (2015). «Floral biology and ovule and seed ontogeny of Nymphaea thermarum, a water lily at the brink of extinction with potential as a model system for basal angiosperms». Annals of Botany115: 211-226. PMID25497514. doi:10.1093/aob/mcu235.
Povilus, RA; Losada, JM; Friedman, WE (2015). «Floral biology and ovule and seed ontogeny of Nymphaea thermarum, a water lily at the brink of extinction with potential as a model system for basal angiosperms». Annals of Botany115: 211-226. PMID25497514. doi:10.1093/aob/mcu235.