@BOOK{NAP10680, author = "National Research Council and National Academy of Engineering", title = "Future Hydrogen Production and Use: Letter Report", doi = "10.17226/10680", url = "https://nap.nationalacademies.org/catalog/10680/future-hydrogen-production-and-use-letter-report", year = 2003, publisher = "The National Academies Press", address = "Washington, DC" }