Geisel, Theo Department of Nonlinear Dynamics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;
http://iopscience.iop.org/article/10.1088/1367-2630/18/10/105001/meta;jsessionid=6673DF774737B5345947A1BA35304666.c2.iopscience.cld.iop.org (Publisher version)
Lukovic, M., Navez, P., Tsironis, G. P., & Geisel, T. (2016). Resilience of PT symmetry against stochasticity in a gain-loss balanced oscillator. New Journal of Physics, 18: 105001. doi:10.1088/1367-2630/18/10/105001.