@book{13894,
	author = {Beck, Anna.},
	title = {The collected papers of Albert Einstein /},
	publisher = {Princeton University Press,},
	year = {c1987-<c2015>},
	address = {Princeton, N.J. :},
	note = {"English translation of selected texts"--Vol. 13, t.p.},
	url = {http://www.loc.gov/catdir/description/prin031/87160800.html}
}