| Reference |
H.M.E. Schürmann, A.H.W. Aten, A.J.H. Boerboom, A.C.W.C. Bot, G. Couwenberg, D.F. Dance, P.M. Hurley, D. Ledent, H. Stauffer, J.J.S. Steensma and R. Suringa, Fourth preliminary note on age determinations of magnetic rocks by means of radioactivity, Geol. Mijnb. 39, 93-104 (1960) |
