References
- Chrysler , M. A. 1907 . The Structure and Relationships of the Potamogetonaceae and Allied Families . Bot. Gaz. , xliv ( 3 ) : 161
- Hagström , J. O. 1916 . Critical Researches on the Potamogetons . Kungl. Svenska Vetenskapsakad. Handlingar , Bd. 55 ( 5 )