L. B. Retamoso, N. M. L. Onofre, L. Hann, and E. M. Marchioro, “ Effect of light-curing units in shear bond strength of metallic brackets: an in vitro study ”, J Appl Oral Sci, vol. 18, no. 1, pp. 68–74, Feb. 2010, doi: 10.1590/S1678-77572010000100012.