@book{/content/publication/pub-80399e8b-en, author = "International Telecommunication Union", title = "Spectrum Monitoring", year = "2011", pages = 674, url = "https://www.itu-ilibrary.org/content/publication/pub-80399e8b-en", doi = "https://doi.org/http://handle.itu.int/11.1002/pub/80399e8b-en" }