DePalma, Robert A.; Smit, Jan; Burnham, David A.; Kuiper, Klaudia; Manning, Phillip L.; Oleinik, Anton; Larson, Peter; Maurrasse, Florentin J.; Vellekoop, Johan (2019-04-23). "A seismically induced onshore surge deposit at the KPg boundary, North Dakota". Proceedings of the National Academy of Sciences. 116 (17): 8190–8199. Archived from the original on 29 June 2021. Retrieved 31 July 2021.
DePalma, Robert A.; Smit, Jan; Burnham, David A.; Kuiper, Klaudia; Manning, Phillip L.; Oleinik, Anton; Larson, Peter; Maurrasse, Florentin J.; Vellekoop, Johan (2019-04-23). "A seismically induced onshore surge deposit at the KPg boundary, North Dakota". Proceedings of the National Academy of Sciences. 116 (17): 8190–8199. Archived from the original on 29 June 2021. Retrieved 31 July 2021.