The Wigner solution and QCD phase transitions in a modified PNJL model Zhu-fang Cui, Chao Shi, Wei-min Sun, Yong-long Wang and Hong-shi Zong Eur. Phys. J. C, 74 2 (2014) 2782 Published online: 25 February 2014 DOI: 10.1140/epjc/s10052-014-2782-x