Reference

Georg Gärtner, Blagoy Angelov Uzunov, Maya P. Stoyneva, Werner Kofler, Elisabeth Ingolic (2010): Trochisciopsis tetraspora f.minor forma nova (Chlorophyceae-Chlorococcaceae) - a New Terrestrial Green Algal Taxon from Pirin Mts. (Bulgaria) and ist Ultrastructure. (With 18 Figures). – Phyton, Annales Rei Botanicae, Horn – 50_1: 127 - 136.