E. M. Bayoumi, M. F. Riad, M. M. Zayed, M. A. Shelib, A. M. Bayoumi, and Y. F. Hussein, “Influence of Oscillating Packing Instrument on Microhardness of Bulk-Fill Composite: In Vitro Study”, Open Access Maced J Med Sci, vol. 8, no. D, pp. 146–149, Sep. 2020.