4Vlassiouk I,Choong D P,Vail S A,et al.Control of nano-pore wetting by a photochro-mic spiropyran; A light-controlled value and electrical switch[J].Nano Letters,2006,6(5):1013-1017.
5Luis E Elizalde,Gladys de los Santos.Preparation of 6-benzyioxo-spirobenzopyranindoline compounds and the evaluation of their opti-cal activities[J] ,Dyes and Hgments,2008,78(2):111-116.
6Lunt Teresa F,Franklin Matthew K.Systems and methods for policy based printing,2006.
7Sugano Masashi,Yamazaki Yoshio,Ikeda Masaaki,et al.Image forming apparatus with an unapproved copy preventing means,1996.