1. H. Neilson, H. M. Yakabe,Health Phys., 12 (1966) 98.
2. A. K. De, M. S. Rahaman,Anal. Chem., 35 (1963) 159.
3. Manual of Standard Procedure, Health and Safety Laboratory, U. S. Atomic Energy Commission (1967), E-Mn-01-01
4. G. W. Leddicotte, The Radiochemistry of Manganese, National Academy of Sciences, Nuclear Science Series 3018, p. 18, 1960.
5. H. J. M. Bowen, P. A. Cawse, AERE-2925, 1959.