@misc{WieglebKaplan, author = {Wiegleb, Gerhard and Kaplan, Zdeněk}, title = {An account of the taxonomy of Potamogeton}, series = {Folia Geobotanica}, volume = {33}, journal = {Folia Geobotanica}, number = {3}, issn = {1211-9520}, doi = {10.1007/BF03216205}, pages = {241 -- 316}, language = {en} }