Winklevoss, Howard E., Pension mathematics with numerical illustrations / Howard E. Winklevoss. - Inc., Illionois : Published for the Pension Research Council by Richard D. Irwin, 1977. - 243 pages : illustrations ; 24 cm. ISBN: 0256018863 Subjects--Topical Terms: Pensions--Statistical methods.Pensions--Coasts--Statistical methods.pension trusts--Accounting.