Archibald, Robert Eldred Mostert. Rhodes University; 1982. An investigation into the taxonomy of the diatoms (Bacillariophyta) of the Sundays and Great Fish Rivers, with ecological observations on the Sundays River.

Archibald, Robert Eldred Mostert. Rhodes University; 1969. Studies on the ecology and systematics of the diatoms (Bacillariophyta) from some South Africa rivers.