Ravizza, G. E.; Peucker-Ehrenbrink, B. (2003): The marine (super 187) Os/ (super 188) Os record of the Eocene-Oligocene transition; the interplay of weathering and glaciation. Elsevier, Amsterdam, Netherlands, Earth and Planetary Science Letters, 210 (1-2), 151-165, georefid:2003-046356