D.R. Alex E.S. Green, Nuclear Physics, Mcgraw-Hill Book Company , Inc. , (1955) .
2. J.R. Huizenga and G. IGO, Nucl. Phys. 29 (1962) 462-473.
3. Macklin R.L. and Gibbons J.H. ;phys. Rev. 165, 1147 (1968).
4. Audi G. & Wapstra A. "Nuclear physics", A 595, 4, 409, (1995).
5.Bievre P.De. and Taylor P.D.P.; Int. J. Mass Spectrum. Ion Phys. 123, 149 (1993).
6. Firestons R.B and Shirley V.S ;"Table of isotopes eighth edition" , Newyork (1999 ) .
7. Flynn D.S., Sekharan K.K., Hiller B.A., Laumer H. & Weil J.L., J, PR/C,18,1566, 78 (1995).
8. Wagemans C., Weigmann H., Barthelemy R.;" measurement and resonance analysis of the 33S (N,A)30Si cross sections", (W, WAGEMANS, 860218)," SUBMITTED TO NUCL. PHYS. A", (1986).