References

1. J. R. Smithson and E. R. Pinkston, "Half-life of a water column as a laboratory exercise in exponential decay,"Am. J. Phys. 28, 740–742 (1960). first citation in article
   
2. Thomas B. GreensladeJr., "Simulated secular equilibrium," Phys. Teach. 40, 21–23 (Jan. 2002). first citation in article
   
3. Francis Weston Sears and Mark W. Zemansky, University Physics, 4th ed. (Addison-Wesley, Reading, MA, 1970), p. 207. first citation in article
   
4. Vernier Software, 13979 SW Millikan Way, Beaverton, OR 97005-2886; 503-277-2299; http://www.vernier.com. first citation in article
   
5. Scott Godsen, "Optimization analysis of projectile motion using spreadsheets," Phys. Teach. 40, 523–525 (Dec. 2002). first citation in article
   
6. Ralph E. Lapp and Howard L. Andrews, Nuclear Radiation Physics, 4th ed. (Prentice Hall, New Jersey, 1972), p. 176. first citation in article
   
7. See Ref. 6, p. 187. first citation in article
   
8. See Ref. 6, p. 190. first citation in article
   
9. Robley D. Evans, The Atomic Nucleus (McGraw-Hill, New York, 1955), Chap. 15. first citation in article
   
10. Dobromir S. Pressyanov, "Short solution of the radioactive decay chain equations," Am. J. Phys. 70, 444–445 (April 2002). [ISI] first citation in article
    

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