@book{20872,
	author = {Spiers, F. W. },
	title = {proceedings of the International School of Physics "Enrico Fermi", course XXX, Varenna on Lake Como ... 5th August 1963 / },
	publisher = {Academic, },
	year = {c1964.},
	address = {New York : },
	note = {Includes Index. }
}