Dear professionals, kindly send the following articles 1. 20 - Tribology of polymer gears: friction coefficient and wear https://doi.org/10.1016/B978-0-443-21457-8.00022-4 2. Load-bearing analysis of polymer nanocomposite gears using a temperature-based step loading technique: Experimental and numerical study https://doi.org/10.1016/j.wear.2022.204595 3. 2 - Basic characteristics of polymers for polymer-based gear https://doi.org/10.1016/B978-0-443-21457-8.00002-9 -- Naveen Kammar Dharwad +91-9742938979