@article {221,
	title = {Estudo do povoamento dos horizontes superiores da rocha litoral da costa da Arr{\'a}bida (Portugal) [3]},
	journal = {Arquivos do Museu Bocage},
	volume = {5},
	year = {1974},
	pages = {382 pp.},
	author = {Saldanha, L.}
}
@article {77,
	title = {Additions and new data on Portuguese opisthobranchs},
	journal = {Bollettino Malacologico Roma},
	volume = {34},
	year = {1999},
	pages = {97-102},
	url = {https://www.researchgate.net/publication/250310104_Additions_and_new_data_on_Portuguese_opisthobranchs},
	author = {Calado, G. and Urgorri, V.}
}
