PROMISLOW, S. David. Fundamentals of actuarial mathematics. Chichester : John Wiley and Sons, 2006. xix, 372 s. Available on Internet: <http://www.gbv.de/dms/goettingen/497345854.pdf> <http://www.zentralblatt-math.org/zmath/en/search/?an=1100.62095> ISBN 0-470-01689-2.