Krotov, A.I. & Schibkova, K.G. (1959). Species novae diatomacearum e Palaeogeno Montium uralensium. Botaniceskie materialy otdela sporovyh rastenij Botanicheskogo instituta imeni V.L. Komarova, Akademii Nauk S.S.S.R. Notulae systematicae e sectione cryptogamica instituti botanici nomine V.L. Komarovi academiae scientiarum URSS, 12: 112-129, 5 ris. (fig.)