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Alexandru, Andrei; Bergner, Georg; Schaich, David Alexander; Wenger, Urs (2018). Solution of the sign problem in the Potts model at fixed fermion number. Physical review. D - particles, fields, gravitation, and cosmology, 97(11) American Physical Society 10.1103/PhysRevD.97.114503
Alexandru, Andrei; Wenger, Urs (2011). QCD at non-zero density and canonical partition functions with Wilson fermions. Physical review. D - particles, fields, gravitation, and cosmology, 83(3), p. 34502. Melville, N.Y.: American Physical Society 10.1103/PhysRevD.83.034502