Morek, W., A. C. Suzuki, R. O. Schill, D. Georgiev, M. Yankova, N. J. Marley, and Łukasz Michalczyk. “Redescription of Milnesium alpigenum Ehrenberg, 1853 (Tardigrada: Apochela) and a Description of Milnesium inceptum Sp. Nov., a Tardigrade Laboratory Model”. Zootaxa, vol. 4586, no. 1, Apr. 2019, pp. 35–64, doi:10.11646/zootaxa.4586.1.2.