Westerhaus, M., Wyss, M., Yilmaz, R., Zschau, J. (2002): Correlating variations of b values and crustal deformations during the 1990s may have pinpointed the rupture initiation of the Mw = 7.4 Izmit earthquake of 1999 August 17. - Geophysical Journal International, 148, 1, 139-152.https://doi.org/10.1046/j.0956-540x.2001.01554.x