1990

1. 2D quantum field theories away from criticality: Finite-size scaling, the C-theorem and the S-matrix

   Nuclear Physics B (Proceedings Supplements), Vol. 16, Núm. C, pp. 600-601

2. Are there infra-red problems in the 2D non-linear σ-models?

   Physics Letters B, Vol. 246, Núm. 3-4, pp. 399-404