@book{1661,
	author = {Sauerbruch, Ferdinand. and Wenke, Hans.},
	title = {El dolor; su naturaleza y significación.},
	publisher = {Zeus},
	year = {1961.},
	address = {Barcelona},
	edition = {2. ed.},
	note = {Translation of: Wesen und Bedeutung des Schmerzes.}
}