@article {34,
	title = {Tolypella salina Corillion en la Laguna de Carralogro{\~n}o ({\'A}lava)},
	journal = {Anales Jard{\'\i}n Bot{\'a}nico Madrid},
	volume = {45},
	year = {1988},
	pages = {547},
	chapter = {2},
	author = {Cirujano, S.}
}
@article {31,
	title = {N{\'u}meros cromosom{\'a}ticos de plantas occidentales, 211-222},
	journal = {Anales Jard{\'\i}n Bot{\'a}nico Madrid},
	volume = {39},
	year = {1983},
	pages = {525-531},
	author = {Castroviejo, S.}
}
