Reference:
 - Author: Michael J. Sanderson and Michelle M. McMahon and Mike Steel
   Title: Terraces in phylogenetic tree space
   Journal: Science
   Year: 2011
   Volume: 333
   Number: 6041
   Pages: 448-450
   DOI: 10.1126/science.1206357
   PMID: 21680810
   URL: https://www.science.org/doi/10.1126/science.1206357
Repository-Browse: https://github.com/amkozlov/terraphast-one
