Eleuch, H. Max Planck Institute for the Physics of Complex Systems, Max Planck Society;
Rotter, I. Max Planck Institute for the Physics of Complex Systems, Max Planck Society;
Eleuch, H., & Rotter, I. (2014). Exceptional Points in Open and PT-Symmetric Systems. Acta Polytechnica, 54(2), 106-112. doi:10.14311/AP.2014.54.0106.