Article in a refereed journal:

Christian Gollier, "Expected Net Present Value, Expected Net Future Value, and the Ramsey Rule", Journal of Environmental Economics and Management, vol. 59, n. 2, March 2010, p. 142-148. doi:10.1016/j.jeem.2009.11.003.

Christian Gollier, "Expected Net Present Value, Expected Net Future Value, and the Ramsey Rule", IDEI Working Paper, n. 557, June 2009.