1. The Precambrian of South East Greenland;Andrews,1973
2. The Archean carbonatite-bearing alkaline intrusion at Kaminak lake, N.W.T., Canada—an ion microprobe age;Cavell,1990
3. U-Pb geochronology of zircons from lunar breccia 73217 using a sensitive high mas-resolution ion microprobe;Compston;J Geophys. Res.,1984
4. Ore lead ratios in a continuously changing earth;Cumming;Earth Planet. Sci. Lett.,1975
5. The alkaline rocks of Canada;Currie;Bull. Geol. Surv. Canada,1976