Kahnamouei, A. ., Gholizadeh, S. ., Rikhtegaran, S. ., Daneshpooy, M. ., Kimyai, S. ., Oskoee, A. ., & Rezaei, Y. . (1969). Effect of preheat repetition on color stability of methacrylate- and silorane-based composite resins. Journal of Dental Research, Dental Clinics, Dental Prospects, 11(4), 222-228. https://doi.org/10.15171/joddd.2017.039 (Original work published 1969)