Aounallah, Soufyane, Kamel Loucif, and Nafissa Khennafi-Benghalem. 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) ”. Physics and Chemistry of Solid State 23 (2):293-301. https://doi.org/10.15330/pcss.23.2.293-301.