@article {40581,
	title = {The Ramsey Discounting Formula for a Hidden-State Stochastic Growth Process},
	journal = {Journal of Environmental and Resource Economics },
	volume = {53},
	number = {3},
	year = {2012},
	pages = {309-321},
	url = {https://doi.org/10.1007/s10640-012-9594-y},
	author = {Martin L. Weitzman}
}
