Ph.D. Theses Successfully Defended in the Academic Year 2018/2019 Ph.D. Theses Successfully Defended in the Academic Year 2017/2018 Ph.D. Theses Successfully Defended in the Academic Year 2016/2017 Ph.D. Theses Successfully Defended in the Academic Year 2015/2016 Ph.D. Theses Successfully Defended in the Academic Year 2014/2015