%0 Journal Article %A Shangbin Cui %T Global existence of solutions for a free boundary problem modeling the growth of necrotic tumors %J Interfaces and free boundaries %D 2005 %P 147-159 %V 7 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4171/ifb/118/ %R 10.4171/ifb/118 %F 10_4171_ifb_118