Gradstein, F. M.; Jansa, L. F.; Srivastava, S. P.; Williamson, M. A.; Bonham-Carter, G.; Stam, B. (1990): Aspects of North Atlantic paleo-oceanography--Paleo-oceanographie de l'Atlantique Nord. Geological Society of America, United States, In: Keen, M. J. (editor), Williams, G. L. (editor), Geology of the continental margin of Eastern Canada--Geologie de la marge continentale de l'est du Canada, 2, 351-389, georefid:1999-029701