1. Socin RJ and Walters LK. Manual transmission synchronizers. SAE paper 680008, 1968.
2. Häggström, D. (2016). On synchronization of heavy truck transmissions (Licentiate thesis, KTH Royal Institute of Technology).
3. Häggström D, Sellgren U, Björklund S. (2017). Evaluation of synchronizer loading parameters and their ability to predict failure. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2017
4. Thermal analysis of the synchronizer friction surface and its application to the synchronizer durability improvement;Kinugasa;JSAE review,,1999
5. Wear behaviour of synchronisers in relation to a duty parameter;Lösche;Tribology for Energy Conservation, Tribology Series,1998