1. S. Siggia, McGraw-Hill, New York, 1968, pp. 13, 19 and 22.
2. W.W. Meinke,Science, 121 /1955/ 177.
3. J. Csikai, M. Buczkó, Z. Bődy, A. Demény, Atomic Energy Review, Vol. VII. No. 4, TAEA, Vienna, 1969, pp. 93.
4. Neutron Fluence Measurements, Technical Report No. 107, IAEA, Vienna, 1970, p. 60.
5. Cs.M. Buczkó, M.H. Al-Mundheri, J. Csikai, Z. Dezső,Nucl. Instr. and Meth., 134 /1976/ 101.