Observations on and typification of Gomphonema naviculoides W.Smith (Gomphonemataceae, Bacillariophyta)
B. Van de Vijver, L. Ector, D.M. Williams, and E. Reichardt
Notulae Algarum, vol. 159, p. 1-7, 2020
http://www.notulaealgarum.com/2020/documents/Notulae%20algarum%20No.%20159.pdf