@book{72485,
	author = {Symposium on the Biochemistry and Physiology of Visual Pigments and Lnger, Helmut. and Ruhr-Universitt Bochum.},
	title = {Biochemistry and physiology of visual pigments: symposium held at Inst. f. Tierphysiologie Ruhr-Univ.},
	publisher = {Springer,},
	year = {1973.},
	address = {New York :},
	url = {http://dx.doi.org/10.1007/978-3-642-85769-0}
}