Pomiro, F., Ablitt, C., Bristowe, N. C., Mostofi, A. A., Won, C., Cheong, S.-W., & Senn, M. S. (2020). From first- to second-order phase transitions in hybrid improper ferroelectrics through entropy stabilization. Physical Review B, 102(1), Article 014101. https://doi.org/10.1103/physrevb.102.014101