Supardi, Supardi. “Finding the Optimum Curvature Strains and Elasticity Constant K_4 for Nematic Liquid Crystals Using Minimization of the Frank-Oseen Free Energy Density Functional”. Jurnal Sains Dasar 2, no. 2 (April 13, 2015). Accessed July 6, 2025. https://jurnal.uny.ac.id/index.php/jsd/article/view/3296.