Nina G. Jablonski, The First Americans: The Pleistocene Colonization of the New World, University of California Press, 2002, ISBN 0-940228-50-5.
«... Recent discoveries and events have breathed new life into the coastal migration theory, which suggests just the opposite of the ice-free corridor hypothesis—that maritime peoples first traveled around the North Pacific Coast then followed river valleys leading inland from the sea. Having a coastal route available, however, does not prove that such a maritime migration took place. Archaeological evidence for early boat use from islands along the western margin of the Pacific may support the idea that such a journey was technologically feasible, but archaeological data from the Pacific coast of North and South America are presently ambiguous about the origins of the earliest coastal occupants. ...»