Symmetry and Perturbation Theory proceedings of the international conference SPT 2001, Cala Gonone, Sardinia, Italy, 6-13 May 2001

“… International Workshop on Symmetry and Perturbation Theory <2001, Cala Gonone, Italy> …”

Symmetry and Perturbation Theory proceedings of the international conference SPT 2001, Cala Gonone, Sardinia, Italy, 6-13 May 2001

“… International Workshop on Symmetry and Perturbation Theory <2001, Cala Gonone, Italy> …”