@book{11972,
	author = {Sommerfeld, Arnold,},
	title = {Optics : },
	publisher = {Academic Press,},
	year = {c1954.},
	series = {Sommerfeld, Arnold Johannes Wilhelm, 1868-1951. Lectures on theoretical physics,},
	address = {New York : },
	note = {Issued with various printing dates.}
}