Marzroud, A. Pourtaghi, F.Farhang laleh, and Naghd Ali Choupani. 2018. “Characterization of Fracture Toughness of Acrylic Denture Base Materials Using Modified Arcan Specimen Test”. International Journal of Engineering & Technology 7 (2.13): 237-39. https://doi.org/10.14419/ijet.v7i2.13.12670.