Roth, R. Dept. Theory of Inhomogeneous Condensed Matter, Max Planck Institute for Intelligent Systems, Max Planck Society;
Helden, L., Roth, R., Koenderink, G. H., Leiderer, P., & Bechinger, C. (2003). Direct measurement of entropic forces induced by rigid rods. Physical Review Letters, 90(4): 048301.