Ultrasound-assisted self-metathesis reactions of monounsaturated fatty acids Mohammed Kamal Elmkaddem, Pascale de Caro, Sophie Thiébaud-Roux, Zéphirin Mouloungui and Emeline Vedrenne OCL, 23 5 (2016) D507 Published online: 30 September 2016 DOI: 10.1051/ocl/2016038