@Article{adgeo-6-207-2006, AUTHOR = {Lyon, B.}, TITLE = {Robustness of the influence of El NiƱo on the spatial extent of tropical drought}, JOURNAL = {Advances in Geosciences}, VOLUME = {6}, YEAR = {2006}, PAGES = {207--209}, URL = {http://www.adv-geosci.net/6/207/2006/}, ISSN = {1680-7340} }