Dózsa-Farkas, K., and G. Cech. “Description of a New Fridericia Species (Oligochaeta: Enchytraeidae) and Its Molecular Comparison With Two Morphologically Similar Species by PCR-RFLP”. Zootaxa, vol. 1310, no. 1, Sept. 2006, pp. 53–68, doi:10.11646/zootaxa.1310.1.3.