J. Kaliappan and A. MenzelModelling of non-linear switching effects in piezoceramics: a three-dimensional polygonal finite-element-based approach applied to oligo-crystalsJournal of Intelligent Material Systems and Structures, 26, 17, 2322-2337, 2015
J. Kaliappan, A. Menzel, A. Arunachalakasi and S. M SrinivasanA micromechanically motivated model for ferroelectrics combined with polygonal finite elementsPAMM, 10, 1, 299-300, 2010