Valentine, R. B.; Morris, J. D.; Duncan, D., Jr. (1997): Sediment subduction, accretion, underplating, arc volcanism along the margin of Costa Rica; constraints from Ba, Zn, Ni, and (super 10) Be concentrations. American Geophysical Union, Washington, DC, United States, In: Anonymous, AGU 1997 fall meeting, 78 (46, Suppl.), 673, georefid:1998-035682