Graf, W., S. U. Pauls, and S. Vitecek. “Isoperla vjosae Sp. n., a New Species of the Isoperla tripartita Group from Albania (Plecoptera: Perlodidae)”. Zootaxa, vol. 4370, no. 2, Jan. 2018, pp. 171–179, doi:10.11646/zootaxa.4370.2.5.