@article {693,
	title = {Chromosome numbers of Scandinavian plant species},
	journal = {Botaniska notiser},
	year = {1942},
	pages = {19-59},
	author = {L{\"o}ve, A. and L{\"o}ve, D.}
}
@article {373,
	title = {Biological Flora of the British Isles: Zostera L., Zostera marina L. and Zostera hornemanniana Tutin.},
	journal = {Journal of Ecology},
	volume = {30},
	year = {1942},
	pages = {217-226},
	url = {http://www.jstor.org/stable/2256698},
	author = {Tutin, T.G.}
}
