Reference:
 - Author: Frédéric Mahé and Torbjørn Rognes and Christopher Quince and Colomban de Vargas and Micah Dunthorn
   Title: "Swarm v2: highly-scalable and high-resolution amplicon clustering"
   Journal: PeerJ
   Year: 2015
   Volume: 3
   Number: e1420
   DOI: https://doi.org/10.7717/peerj.1420
   PMID: 26713226
   URL: https://peerj.com/articles/1420/
   eprint: https://peerj.com/articles/1420.pdf
 - Author: Frédéric Mahé and Torbjørn Rognes and Christopher Quince and Colomban de Vargas and Micah Dunthorn
   Title: "Swarm: robust and fast clustering method for amplicon-based studies"
   Journal: PeerJ
   Year: 2014
   Volume: 2
   Number: e593
   DOI: 10.7717/peerj.593
   PMID: 25276506
   URL: https://peerj.com/articles/593/
   eprint: https://peerj.com/articles/593.pdf
