@article{Bogaard1985, author = "P.v.d. Bogaard", title = "{Supplemental material: Laacher See Tephra: A widespread isochronous late Quaternary tephra layer in central and northern Europe}", year = "1985", month = "1", url = "https://gsapubs.figshare.com/articles/journal_contribution/Supplemental_material_Laacher_See_Tephra_A_widespread_isochronous_late_Quaternary_tephra_layer_in_central_and_northern_Europe/12333686", doi = "10.1130/8532" }