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)