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Positivity constraints on the low-energy constants of the chiral pion–nucleon Lagrangian

Juan José Sanz-Cillero, De-Liang Yao and Han-Qing Zheng

Eur. Phys. J. C, 74 3 (2014) 2763

DOI: https://doi.org/10.1140/epjc/s10052-014-2763-0

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