@article {Turnsek1975a,
	title = {Geologische und paleontologische Untersuchungen an einem Korallen-Vorkommen im subbetischen Unterjura von Murcia (S{\"u}d-Spanien)},
	journal = {Razprave IV, Razreda SAZU},
	volume = {18},
	number = {5},
	year = {1975},
	pages = {117{\textendash}151},
	keywords = {BL, JS, TIP},
	author = {Turn{\v s}ek, Dragica and Seyfried, H and Geyer, O F}
}
@article {Geister1968,
	title = {Beitr{\"a}ge zur Stratigraphie und Pal{\"a}ontologie des Juras von Ostspanien. IV. Der Jura der Sierra de Corbera (Prov. Valencia)},
	journal = {Neues Jahrbuch f{\"u}r Geologie und Pal{\"a}ontologie, Abhandlungen},
	volume = {131},
	number = {3},
	year = {1968},
	pages = {310{\textendash}336},
	keywords = {RCBS, TIP},
	author = {Geister, J and Geyer, O F}
}
@article {Geyer1969,
	title = {Die Korallen-Gattung Halysitastraea aus dem Oberjura Kolumbiens und ihre Hom{\"o}omorphien mit altpal{\"a}ozoischen Halysitiden},
	journal = {Pal{\"a}ontologische Zeitschrift},
	volume = {43},
	number = {1/2},
	year = {1969},
	pages = {28{\textendash}31},
	keywords = {BL, TIP},
	doi = {10.1007/BF02987924},
	url = {http://link.springer.com/article/10.1007/BF02987924},
	author = {Geyer, O F}
}
@article {Geyer1968,
	title = {Nota sobre la posicion estratigrafica y la fauna de corales del Jurasico superior en la peninsula de la Guajira},
	journal = {Bolet{\'\i}n de Geolog{\'\i}a de la Universidad Industrial de Santander},
	volume = {24},
	year = {1968},
	pages = {9{\textendash}22},
	keywords = {BL, TIP},
	author = {Geyer, O F}
}
