Phat, T. H., Hoa, L. V., Anh, N. T., & Long, N. V. (2008). High Temperature Symmetry Non-Restoration And Inverse Symmetry Breaking in the Z₂×Z₂ Model. Communications in Physics, 18(1), 1–8. https://doi.org/10.15625/0868-3166/18/1/10684