Degiovanni, Augusto, and Maurizio Pavesi. “Notes on the Subspecies of Pterostichus Andreinii Dodero, 1922 (Insecta Coleoptera Carabidae)”. Natural History Sciences, vol. 4, no. 1, Mar. 2017, pp. 81-86, doi:10.4081/nhs.2017.320.