@BOOK{NAP19510, title = "National Joint Planning for Reliable Emergency Communications: A Report to the National Communications System", doi = "10.17226/19510", url = "https://nap.nationalacademies.org/catalog/19510/national-joint-planning-for-reliable-emergency-communications-a-report-to", year = 1983, publisher = "The National Academies Press", address = "Washington, DC" }