Cruz M. Á., Arias S., Terrazas T., Molecular phylogeny and taxonomy of the genus Disocactus (Cactaceae), based on the DNA sequences of six chloroplast markers, Willdenowia, 2016, 46(1):145-164, doi: 10.3372/wi.46.46112
Chloroplast phylogeny and revised circumscription of Disocactus, including the transfer of three former Epiphyllum species.