[1]
Rábano, I., Pek, H. y Vaněk, J. 1985. New agnostina (Trilobita) from the Llanvirn (Ordovician) of Spain. Estudios Geológicos. 41, 5-6 (dic. 1985), 439–446. DOI:https://doi.org/10.3989/egeol.85415-6724.