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Gasser, Jürg; Haefeli, Christoph; Ivanov, Mikhail A.; Schmid, Martin (2010). Relations between SU(2)- and SU(3)-LECs in chiral perturbation theory. Physics of particles and nuclei, 41(6), pp. 939-941. Woodbury, N.Y.: American Institute of Physics 10.1134/S1063779610060249
Gasser, Jürg; Haefeli, Christoph; Ivanov, Mikhail (2007). Integrating out strange quarks in ChPT. Physics letters. B, 652(1), pp. 21-26. Amsterdam: Elsevier 10.1016/j.physletb.2007.06.058
Colangelo, Gilberto; Haefeli, Christoph (2006). Finite volume effects for the pion mass at two loops. Nuclear physics. B, 744(1-2), pp. 14-33. Amsterdam: North Holland 10.1016/j.nuclphysb.2006.03.010
Colangelo, Gilberto; Fuhrer, Andreas; Haefeli, Christoph (2006). The pion and proton mass in finite volume. NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 153(1), pp. 41-48. 10.1016/j.nuclphysbps.2006.01.004
