Reference

E. Tschermak-Woess, Elsa Leonore Kusel-Fetzmann (1992): A New Find of Tetrasporopsis fuscescens (A. Braun ex Kützing) Lemmermann (Chrysophyta) in Austria, and Some Additional Observations – Archiv für Protistenkunde – 142_1992: 157 - 165.