1. Bender B (1983) Maximum likelihood estimation of b values for magnitude grouped data. Bull Seismol Soc Am 73(3):831–851
2. Bowman DD, Ouillon G, Sammis G, Sornette A, Sornette D (1998) An observational test of the critical earthquake concept. J Geophys Res 103:359–372
3. Cornell CA (1968) Engineering seismic risk analysis. Bull Seismol Soc Am 58:1583–1606
4. Gutenberg B, Richter CF (1944) Frequency of earthquakes in California. Bull Seismol Soc Am 34:185–188
5. Hainzl S, Scherbaum F, Beauval C (2006) Estimating background activity based on interevent-time distribution. Bull Seismol Soc Am 96(1):313–320