Yarou Mustapha,Time-dependent subdifferential operators , Inter. Conf. HPRA, 23-2, 6/06/ 2014, Bursa , 2014 , Turquie

Yarou Mustapha ,Evolution problem  governed by cyclic monotone operators ,CMA, 14-17 November 2014, Kuwait , 2014 ,Koweit

Yarou Mustapha ,Some results for state dependent sweeping process ,ICFPTA, 20-24/07/2015, Istanbul, 2015 , Turquie.