Stern, Robert J.; Morris, Julie D.; Bloomer, Sherman H.; Hawkins, James W., Jr. (1991): The source of the subduction component in convergent margin magmas; trace element and radiogenic isotope evidence from Eocene boninites, Mariana Forearc. Pergamon, Oxford, International, Geochimica et Cosmochimica Acta, 55 (5), 1467-1481, georefid:1991-030076