[1]
I. Rutanen and P. Rassi, “<i>Coelambus polonicus</i> (Aube) and <i>C. parallelogrammus</i> (Ahrens) new to the Finnish fauna (Coleoptera, Dytiscidae)”, Entomol. Fennica, vol. 2, no. 1, p. 23, Jan. 1991.