Will, K. “A Taxonomic Review, New Species and a Key to Species of Platycoelus Blanchard, 1843 (Coleoptera: Carabidae: Pterostichini)”. Zootaxa, vol. 4034, no. 2, Oct. 2015, pp. 291–308, doi:10.11646/zootaxa.4034.2.3.