Heurck, H. F. v. 1., & Baxter, W. E. 1. (1896). A treatise on the diatomaceae: Containing introductory remarks on the structure, life history, collection, cultivation and preparation of diatoms, and a description and figure typical of every known genus as well as a description and figure of every species found in the North Sea and countries bordering it, including Great Britain, Belgium & c. London: William Wesley & Son.

Heurck, Henri Ferdinand van 1838-1909, and Wynne Edwin 1844-1920 Baxter. A Treatise On the Diatomaceae: Containing Introductory Remarks On the Structure, Life History, Collection, Cultivation and Preparation of Diatoms, and a Description and Figure Typical of Every Known Genus As Well As a Description and Figure of Every Species Found in the North Sea and Countries Bordering It, Including Great Britain, Belgium & C. London: William Wesley & Son, 1896.

Heurck, Henri Ferdinand van 1838-1909, and Wynne Edwin 1844-1920 Baxter. A Treatise On the Diatomaceae: Containing Introductory Remarks On the Structure, Life History, Collection, Cultivation and Preparation of Diatoms, and a Description and Figure Typical of Every Known Genus As Well As a Description and Figure of Every Species Found in the North Sea and Countries Bordering It, Including Great Britain, Belgium & C. London: William Wesley & Son, 1896.