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Hoferichter, Martin; Ruiz de Elvira, Jacobo; Kubis, Bastian; Meißner, Ulf-G. (2023). On the role of isospin violation in the pion–nucleon σ-term. Physics letters. B, 843, p. 138001. Elsevier 10.1016/j.physletb.2023.138001
Hoferichter, Martin; Ruiz de Elvira, Jacobo; Kubis, Bastian; Meißner, Ulf-G. (28 February 2020). Roy–Steiner equations for pion–nucleon scattering and the pion–nucleon σ-term. PoS - proceedings of science, CD2018. Trieste, Italy: Scuola Internazionale Superiore di Studi Avanzati SISSA 10.22323/1.317.0010
