@article {Vidal1874,
	title = {Datos para el conocimiento del terreno garumnense de Catalu{\~n}a},
	journal = {Boletin de la Comisi{\'o}n del Mapa Geol{\'o}gico de Espa{\~n}a},
	volume = {1},
	year = {1874},
	pages = {209{\textendash}247},
	keywords = {RCBS, TIP},
	url = {http://hdl.handle.net/2027/uc1.{\$}b804710},
	author = {Vidal, L M}
}
@article {Mallada1890,
	title = {Sinopsis de las especies f{\'o}siles que se han encontradas en Espa{\~n}a. Sistema cret{\'a}ceo (cret{\'a}ceo inferior)},
	journal = {Bolet{\'\i}n de la Comisi{\'o}n del Mapa Geol{\'o}gico de Espa{\~n}a},
	volume = {16},
	year = {1890},
	pages = {pl. 51{\textendash}61, 63{\textendash}64},
	keywords = {RCBS, TIP},
	url = {http://books.google.com/books?id={\_}m1aAAAAYAAJ},
	author = {Mallada, L}
}
@article {Mallada1892,
	title = {Cat{\'a}logo general de las especies f{\'o}siles encontradas en Espa{\~n}a},
	journal = {Boletin de la Comisi{\'o}n del Mapa Geol{\'o}gico de Espa{\~n}a},
	volume = {18},
	year = {1892},
	pages = {1{\textendash}253},
	keywords = {RCBS, TIP},
	url = {http://books.google.com/books?id=VLArAAAAIAAJ},
	author = {Mallada, L}
}
@article {Mallada1887,
	title = {Sinopsis de las especies f{\'o}siles que se han encontradas en Espa{\~n}a. Terreno Mesozoico (Cret{\'a}ceo inferior)},
	journal = {Boletin de la Comisi{\'o}n del Mapa Geol{\'o}gico de Espa{\~n}a},
	volume = {14},
	year = {1887},
	pages = {1{\textendash}171},
	keywords = {RCBS, TIP},
	url = {http://books.google.com/books?id=rPAuAQAAIAAJ},
	author = {Mallada, L}
}
