Gravesen, P., Rolle, F., & Surlyk, F. (1982). Lithostratigraphy and sedimentary evolution of the Triassic, Jurassic and Lower Cretaceous of Bornholm, Denmark. Danmarks Geologiske Undersøgelse Serie B, 7, 1–51. https://doi.org/10.34194/serieb.v7.7062