Simerská, Carmen: Remarks on the economic criterion - the Internal rate of return.
(English).
In:
Chleboun, J., Přikryl, P., Segeth, K.
and Vejchodský, T. (eds.): Programs and Algorithms of Numerical Mathematics.
Proceedings of Seminar. Dolní Maxov, June 1-6, 2008.
Institute of Mathematics AS CR, Prague, 2008.
pp. 170-176
Steffensen, J. F.:
More multiplicity.
(English).Aktuárské vědy,
vol. 7
(1938),
issue 2,
pp. 71-72