On two members of the genus Niphargus Schiödte, 1849 (Crustacea: Niphargidae) from the Balkan Peninsula, N. deelemanae grex ssp. n. and N. jurinaci S. Kar. 1950 (contribution to the knowledge of the Amphipoda 271). (2013). Acta Entomologica Serbica, 18(1/2), 207-235. http://147.91.73.126/index.php/aes/article/view/14