Kociolek, J.P.; Stoermer, E.F. (1991). Taxonomy and ultrastructure of some Gomphonema and Gomphoneis taxa from the upper Laurentian Great Lakes. Canadian Journal of Botany. 69: 1557-1576.
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Kociolek, J.P.; Stoermer, E.F.
1991
Taxonomy and ultrastructure of some Gomphonema and Gomphoneis taxa from the upper Laurentian Great Lakes