ng Scientist, Physics Department, Mons University, Belgium, 25 October 2010. • Seminar, "Potentials Unbounded Below", Centro de ciencias de Benasque Pedro Pascual, Spain, 29 July 2010. • Participant, Stipersymmetric Quantum Mechanics and Spectral Design, Centro de ciencias de Benasque Pedro Pascual, 25-30 Ju