Correlation of Telychian (Silurian) altered volcanic ash beds in Estonia, Sweden and Norway
Kiipli, Tarmo
;
Männik, Peep
;
Batchelor, Richard A.
;
Kiipli, Enli
;
Kallaste, Toivo
;
Perens, H.
Norwegian journal of geology
2001
/
3, p. 179-193