@BOOK{NAP18839, author = "National Academy of Sciences", title = "Evaluation of Alternative Power Sources for Low-Emission Automobiles: Report", doi = "10.17226/18839", url = "https://nap.nationalacademies.org/catalog/18839/evaluation-of-alternative-power-sources-for-low-emission-automobiles-report", year = 1973, publisher = "The National Academies Press", address = "Washington, DC" }