1. Microchrons: the87Rb-87Sr dating of microscopic samples;Papanastassiou,1981
2. Cometary meteoroids;Millman,1972
3. Rept. Sci. Results Voyage;Murray,1891
4. Magnetic particles found by raking the deep sea bottom;Bruun;Deep-Sea Res.,1955
5. Magnetic spherules in deep sea deposits;Pettersson;Pacific Sci.,1958