Mathematical Physics in Mathematics and Physics. Quantum and Operator Algebraic Aspects. On the occasion of the 60th birthday of Sergio Doplicher and John E. Roberts. Certosa di Pontignano Siena, June 20-25, 2000.
Recent Advances in Operator Algebras
On the occasion of the 60th birthday of Laszlo Zsido
Rome, November 8-11, 2006