Andreeta, M. R. B.; Cunha, L. S.; Vales, L. F.; Caraschi, L. C.; Jasinevicius, R. G. Bidimensional codes recorded on an oxide glass surface using a continuous wave CO2 laser. Journal of icromechanics and Microengineering. 2011, 21 (2): 025004. Bibcode:2011JMiMi..21b5004A. doi:10.1088/0960-1317/21/2/025004.
Andreeta, M. R. B.; Cunha, L. S.; Vales, L. F.; Caraschi, L. C.; Jasinevicius, R. G. Bidimensional codes recorded on an oxide glass surface using a continuous wave CO2 laser. Journal of icromechanics and Microengineering. 2011, 21 (2): 025004. Bibcode:2011JMiMi..21b5004A. doi:10.1088/0960-1317/21/2/025004.