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395201
395201
http://dx.doi.org/10.1088/0957-4484/23/39/395201
Security printing of covert quick response codes using upconverting nanoparticle inks.
P356
Q34411531-41647F7F-3600-48E8-B183-C20B2E86C796
P356
395201
http://dx.doi.org/10.1088/0957-4484/23/39/395201