@incollection{DenHartogWiegleb, author = {Den Hartog, C. and Wiegleb, Gerhard}, title = {Potamogetonaceae, Zosteraceae, Cymodoceaceae}, series = {Flora Malesiana, ser. 1 - seed plants, vol. 16}, booktitle = {Flora Malesiana, ser. 1 - seed plants, vol. 16}, editor = {Nooteboom, Hans Peter}, publisher = {Foundation Flora Malesiana}, address = {Leiden}, isbn = {90-71236-53-6}, pages = {167 -- 216}, language = {en} }