Citation: Wang, Zhong-Xia; Liao, Wei-Qiang; Ye, Heng-Yun; Zhang, Yi (2015). Sequential structural transitions with distinct dielectric responses in a layered perovskite organic-inorganic hybrid material: [C4H9N]2[PbBr4].. Dalton transactions (Cambridge, England : 2003), 44, pp. 20406-20412.