[文献]Open access to  e-prints including optics [复制链接]

If you need a paper but have no other ways to get it, you may want to try your luck at the following website. TW2Z=ks=  
Some authors prefer to put their papers in this archive before submitting for official publication, so that the submitted results are protected with a date stamp.
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thanks、

谢谢分享！！