Opdyke, N. D.; Phillips, J. D. (1969): Paleomagnetic stratigraphy of sites 1-7 (leg 1) - preliminary report. In: Initial reports of the Deep Sea Drilling Project - V. 1, Leg 1 of cruises of Glomar Challenger, Orange, Tex., to Hoboken, N. J., Aug.-Sept. 1968, 1, 501-517, georefid:1969-037472