Reference
Peter Zwick, Bernhard Klausnitzer, Rafal Ruta (2013): Contacyphon Gozis, 1886 removed from synonymy (Coleoptera: Scirtidae) to accommodate species so far combined with the invalid name, Cyphon Paykull, 1799 – Entomologische Blätter – 109: 337 - 353.