iting Scientist, Physics Departments, Bogazigi and Kog Universities, Istanbul, Turkey, 1-5 November 2010. • Visiting Scientist, Physics Department, Mons University, Belgium, 25 October 2010. • Seminar, "Potentials Unbounded Below", Centro de ciencias de Benasque Pedro Pascual, Spain, 29 July 2010. • Participa