Razkin, O., Gomez-Moliner, B. J., Vardinoyannis, K., Martinez-Orti, A. & Madeira, M. J. (2016). Species delimitation for cryptic species complexes: case study of Pyramidula (Gastropoda, Pulmonata).
Zoologica Scripta. 46: 55–72. [published online: 27 July 2016].