R Dreesen (1989)
Oolitic ironstones as event-stratigraphical marker beds within the Upper Devonian of the Ardenno-Rhenish Massif. In: Young,T.P. & Taylor,W.E.G. (Eds.). Phanerozoic Ironstones
Geological Society of London Special Publications, vol. 46 p. 65–78.
10677, 135, 148, 158, Lg, SYNDIN, SYNAM, SYNVE, FENTHEU, FA, PETSE, STRA, PALMIC, SEDICL
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