1. Excess argon and dating of Quaternary Eifel volcanism: II. Phonolitic and foiditic rocks near Rieden East Eifel/FRG;Fuhrmann;N. Jb. Geol. Palaeont. Abh.,1986
2. Identification of excess 40Ar by the 40Ar/39Ar age spectrum technique;Lanphere;Earth Planet. Sci. Lett.,1976
3. The derivation of 40Ar/39Ar age spectrum of single grains of hornblende and biotite by laser step-heating;Layer;Geophys. Res. Lett.,1987
4. 40Ar/39Ar age determinations on sanidines of the Eifel volcanic field (Federal Republic of Germany): Constraints on age and duration of a middle Pleistocene cold period;Lippolt;Chem. Geol.,1986
5. Dating of young pumices by the 39Ar-40Ar method, (abstract);Lo Bello;Terra Cognita,1986