Aounallah, S., Loucif, K., & Khennafi-Benghalem, N. (2022). Retraction Note: Friction and wear of polystyrene crystal sliding against steel 100Cr6 in unlubricated contact (PCSS: (2022), 23(2), (293-301), https://doi.org/10.15330/pcss.23.2.293-301) : Array. Physics and Chemistry of Solid State, 23(2), 293–301. https://doi.org/10.15330/pcss.23.2.293-301