Beckmann's Edgeworth-Bertrand duopoly Example Revisited. - Alexei F. Cheviakov; John M. Hartwick (IGTR, 2005)

The zero discounting and maximin optimal paths in a simple model of global warming. - Antoine d'Autume; John M. Hartwick; Katheline Schubert (Math. Soc. Sci., 2010)

Sustainability with endogenous discounting when utility depends on consumption and amenities. - John M. Hartwick; Ngo Van Long (Math. Soc. Sci., 2018)