Price revision in long-term energy contracts: when is it possible to adjust prices or modify the terms of a long-term energy contract under Swiss law?

Sebastiano Nessi authored "Price revision in long-term energy contracts: when is it possible to adjust prices or modify the terms of a long-term energy contract under Swiss law?" in: 40 under 40 International Arbitration (2018), Carlos Gonzalez-Bueno ed., Dykinson S.L., pp. 386-398