1. Cosmic ray produced 32Si in nature;Lal;Science,1960
2. Cosmic ray produced radionuclides in the sea;Lal;J. Oceanog. Soc. Japan,1962
3. Investigations in marine environments using radioisotopes produced by cosmic rays;Kharkar,1963
4. Concentration of cosmogenic 32Si in deep Pacific and Indian waters based on study of Galathea deep-sea siliceous sponges;Lal;Galathea Report 11,1970
5. The measurement of dissolved 32Si in seawater;Schink,1963