Niemi, R. and Skubała, P. 1993. New species of <i>Moritzoppia</i> and <i>Medioppia</i> from the Beskidy Mountains, Poland (Acarina, Oribatida, Oppiidae). Entomologica Fennica. 4, 3 (Sep. 1993), 195–200. DOI:https://doi.org/10.33338/ef.83767.