@book{59371,
	author = {Proceedings of International School of Physics "Enrico Fermi"},
	title = {Metrology and fundamental constants, Varenna, Italy. Scuola Internazionale di Fisica, eng},
	publisher = {North-Holla},
	year = {1980},
	series = {Proceedings of International School of Physics "Enrico Fermi"},
	address = {New York}
}