Shekarriz, M., B. Ghanbari, S. Taghipoor, A.A. Khalili, F. Hajialiakbari, M. Adibi, and M. Soleymani. 2010. “Synthesis and Antioxidant Characteristics of Borate Esters Used in Lubricating Oil”. Asian Journal of Chemistry 22 (5):3646-52. https://asianpubs.org/index.php/ajchem/article/view/11594.