@article{ShebalinNarteauZecharetal.2014,
  author    = {Peter N. Shebalin and Clement Narteau and Jeremy Douglas Zechar and Matthias Holschneider},
  title     = {Combining earthquake forecasts using differential probability gains},
  journal   = {Earth, planets and space},
  volume    = {66},
  doi       = {10.1186/1880-5981-66-37},
  year      = {2014},
}