Tseplik, N., Maltsev, Y., Glushchenko, A., Genkal, S. and Kulikovskiy, M. (2024) “Two new Planothidium (Achnanthidiaceae, Bacillariophyceae) species with a sinus from the Kamchatka Peninsula, Russia”, Phytotaxa. Auckland, New Zealand, 664(2), pp. 111–122. doi: 10.11646/phytotaxa.664.2.3.