1. Tierfährten in der allerödzeitlichen Vulkanasche des Laacher See Vulkans bei Mertloch, Kreis Mayen-Koblenz;Baales;Archiv füer Korrespondenzblatt,1997
2. The eruptive center of the late Quaternary Laacher See tephra;Bogaard;Geologische Rundschan,1984
3. Laacher See Tephra;Bogaard;Geological Society of America Bulletin,1985
4. Bogaard, P. van den, Schmincke, H.-U., Freundt, A., Park, C., 1990. Evolution of complex Plinian eruptions: The Late Quaternary Laacher See case history. In: Hardy, D., et al. (Eds.), Thera and the Aegean World, vol. 3. Santorini, Greece, The Thera Foundation, London 2, pp. 463–483.
5. 40Ar/39Ar ages of sanidine phenocrysts from Laacher See Tephra (12,900yrBP);Bogaard;Earth and Planetary Science Letters,1995