Yasui, N., Vogiatzis, C., Yoshida, R., & Fukumizu, K. (1969). imPhy: Imputing Phylogenetic Trees with Missing Information Using Mathematical Programming. Ieee/Acm Transactions On Computational Biology And Bioinformatics, 17(4), 1222-1230. https://doi.org/10.1109/TCBB.2018.2884459 (Original work published 1969)