1. M. Abramowitz, I. Stegun, Handbook of Mathematical Functions, Dover, New York, 1972
2. P.F. Byrd, M.D. Friedman, Handbook of Elliptic Integrals for Engineers and Scientists, Springer, Berlin, 1971
3. Radiation field from a circular disk source;Hubbell;J. Res. N.B.S.,1961
4. Evaluation of a generalized elliptic-type integral;Epstein;J. Res. N.B.S.,1963
5. Sample calculation of gamma ray penetration into shelters, Contribution of sky shine and roof contamination;Berger;J. Res. N.B.S.,1958