Farley, Kenneth A. (2001): Extraterrestrial helium in seafloor sediments; identification, characteristics, and accretion rate over geologic time. Kluwer Academic/Plenum Publishers, New York, NY, United States, In: Peucker-Ehrenbrink, Bernhard (editor), Schmitz, Birger (editor), Accretion of extraterrestrial matter throughout Earth's history, 179-204, georefid:2002-047214