GRAEFF, C., KOCIOLEK, J. P. and BURLIGA, A. L. (2012) “Valve morphology of four species of <em>Frustulia </em>(Bacillariophyta), including two described as new”,
Phytotaxa
, 42(1), pp. 62–76. doi: 10.11646/phytotaxa.42.1.8.