@article {690,
	title = {Los Plantagos espa{\~n}oles},
	journal = {Anales Jard. Bot. MadridAnales Jard. Bot. Madrid},
	volume = {20},
	year = {1963},
	pages = {may-50},
	author = {Losa,M.T.}
}
@article {575,
	title = {Contribuci{\'o}n al estudio fitosociol{\'o}gico de los hayedos espa{\~n}oles},
	journal = {Anales Jard. Bot. MadridAnales Jard. Bot. Madrid},
	volume = {20},
	year = {1963},
	pages = {97-128},
	author = {RivasMart{\'\i}nez,S.}
}
@article {439,
	title = {Aportaciones al conocimiento de la flora C{\'a}ntabro-Astur. VII},
	journal = {Bol. Inst. Estud. Asturianos, Supl. Ci.Bol. Inst. Estud. Asturianos, Supl. Ci.},
	volume = {7},
	year = {1963},
	pages = {35-81},
	author = {La{\'\i}nz, M. \& al.}
}
