Applequist, W.L. 2012. Report of the nomenclature committee for vascular plants: 64. Taxon 61(5): 1108–1117. There was no consensus for or against a proposal to superconserve Melianthaceae against Francoaceae.
Sytsma, K.J., Spalink, D. & Berger, B. 2014. Calibrated chronograms, fossils, outgroup relationships, and root priors: re‐examining the historical biogeography of Geraniales. Biological Journal of the Linnean Society 113(1): 29-49. doi: 10.1111/bij.12297Full text PDFreference page