@article{ZykovBordyugovLentzetal.2010,
  author    = {Vladimir Zykov and Grigory Bordyugov and Hartmut Lentz and Harald Engel},
  title     = {Hysteresis phenomenon in the dynamics of spiral waves rotating around a hole},
  doi       = {10.1016/j.physd.2009.07.018},
  url       = {http://www.sciencedirect.com/science/journal/01672789},
  year      = {2010},
}