TY - JOUR T1 - Spatiotemporal drought variability in northwestern Africa over the last nine centuries JF - Journal of Climate Dynamics Y1 - 2011 A1 - Ramzi Touchan A1 - Anchukaitis, K. J. A1 - David Meko A1 - Sabir, Mohammad A1 - Attalah, S. A1 - Aloui, A. VL - 37 ER -