%0 Journal Article %A Jose A. Franco %T On the $n$-Dimensional Porous Medium Diffusion Equation and Global Actions of the Symmetry Group %J Symmetry, integrability and geometry: methods and applications %D 2013 %V 9 %U http://geodesic.mathdoc.fr/item/SIGMA_2013_9_a10/ %G en %F SIGMA_2013_9_a10