@booklet {238,
	title = {The family of Lemnaceae - a monographic study, 1. Ver{\"o}ff. Geobot. Isnt. ETH (Stift. R{\"u}bel)},
	volume = {71},
	year = {1986},
	abstract = {<p>1-563</p>
},
	author = {Landolt, Elias}
}
@booklet {239,
	title = {Lemnaceae The Families and Genera of Flowering Plants.},
	volume = {4},
	year = {1998},
	publisher = {"Springer-Verlag, New York."},
	abstract = {264-270},
	author = {Landolt, Elias}
}
@booklet {125,
	title = {World Checklist of Selected Plant Families},
	year = {2008},
	author = {"Royal Botanic Gardens, Kew"}
}
