9[4]Dimitri A.Parthenopoulos, Peter M.Rentzepis. Further reading threedimensional optical storage memory[ J ]. Science, 1989,245 (8): 843 -845.
10[5]Dieter Oesterhelt, Christoph Brau - chle, Norbert Hampp. Bacteriorhodopsin: a biological material for information processing[J]. Quarterly Reviews of Biophysics, 1991,24(4) :425 - 478.