EEPAS and earthquake rupture directivity

I got interested into the following in-press papers.

• Rhoades et al. (2011) test the performance of The Every Earthquake a Precursor According to Scale (EEPAS) model in California and Japan, with promising results for long-range predictability. 
• Zaliapin and Ben-Zion (2011) find that strong asymmetric aftershock patterns develop along large faults when large velocity contrasts are present, thus suggesting that the directivity of the earthquake rupture could be conditioned by the fault structure.

Rhoades, D., Robinson, R. and Gerstenberger, M. (2011), Long-range predictability in physics-based synthetic earthquake catalogues. Geophysical Journal International, 185: no. doi: 10.1111/j.1365-246X.2011.04993.x
Zaliapin, I. and Ben-Zion, Y. (2011), Asymmetric distribution of aftershocks on large faults in California. Geophysical Journal International, 185: no. doi: 10.1111/j.1365-246X.2011.04995.x