Shinobu Hosono, “Berry's phase, Schwinger term and explicit calculations in two dimensions”, Nuclear Physics B, 300, 1988, 238
C. Adam, “Covariant Stora–Zumino chain terms”, Physics Letters B, 455, № 1-4, 1999, 197
Marc Henneaux, “Structure of Constrained Hamiltonian Systems and Becchi-Rouet-Stora Symmetry”, Phys. Rev. Lett., 55, № 8, 1985, 769
G. Kelnhofer, “Determination of covariant Schwinger terms in anomalous gauge theories”, Z. Phys. C - Particles and Fields, 52, № 1, 1991, 89
H. B. Thacker, “Topological insulators and the QCD vacuum: The theta parameter as a Berry phase”, Phys. Rev. D, 89, № 12, 2014, 125011
M. Dubois-Violette, M. Talon, C.M. Viallet, “Results on BRS cohomologies in gauge theory”, Physics Letters B, 158, № 3, 1985, 231
A. G. Reiman, “Extensions of Gauge groups, related to quantum anomalies”, J Math Sci, 40, № 1, 1988, 80
Yaron Oz, “BFV-BRST quantization of anomalous d=2 non-abelian chiral theory”, Physics Letters B, 236, № 3, 1990, 273
G Kelnhofer, “On the algebraic structure of covariant anomalies and covariant Schwinger terms”, J. Phys. A: Math. Gen., 27, № 6, 1994, 2225
A. P. Balachandran, S. Vaidya, “Emergent Chiral Symmetry: Parity and Time Reversal Doubles”, Int. J. Mod. Phys. A, 12, № 29, 1997, 5325