1. First report of Potamogeton×undulatus (P. crispus×P. praelongus, Potamogetonaceae) in North America, with notes on morphology and stem anatomy;Alix;Rhodora,2006
2. Potamogeton undulatus Wolfgang;Baagøe;Bot. Tidsskr.,1897
3. Potamogeton×vepsicus (Potamogetonaceae)—novyi gibridnyi rdest iz Verchnego Povolzhya;Bobrov;Bot. Zhurn.,2006
4. Morphological and molecular confirmation of the hybrid Potamogeton×salicifolius (P. lucens×P. perfoliatus, Potamogetonaceae) in Upper Volga region (Russia);Bobrov;Komarovia,2008
5. Potamogeton L;Dandy,1975