@article {416,
	title = {Is asexual reproduction more important at geographical limits? A genetic study of the seagrass Zostera marina in the Ria Formosa, Portugal},
	journal = {Marine Ecology Progress Series},
	volume = {265},
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	pages = {77-83},
	doi = {10.3354/meps265077},
	author = {Billingham, M.R. and Reusch, T.B.H. and Alberto, F. and Serr{\~a}o, E.A.}
}
@article {377,
	title = {Phylogenetic relationships in the genera Zostera and Heterozostera (Zosteraceae) based on matK sequence data},
	journal = {Journal of Plant Research},
	volume = {116},
	year = {2003},
	pages = {273{\textendash}279},
	doi = {10.1007/s10265-003-0090-x},
	author = {Tanaka, N. and Kuo, J. and Omori, Y. and Nakaoka, M. and Aioi, K,}
}
