Symmetry Breaking on Density in Escaping Ants: Experiment and Alarm Pheromone Model Li, Geng ; Huan, Di ; Roehner, Bertrand ; Xu, Yijuan ; Zeng, Ling ; Di, Zengru ; Han, Zhangang Abstract Publication: PLoS ONE Pub Date: December 2014 DOI: 10.1371/journal.pone.0114517 Bibcode: 2014PLoSO...9k4517L