%0 Journal Article %T Existence of multiple solutions for a nonlinearly perturbed elliptic parabolic system in $R^2$ %A Michinori Ishiwata %A Takayoshi Ogawa %A Futoshi Takahashi %J Electronic Journal of Differential Equations %D 2009 %I Texas State University %X We consider the following nonlinearly perturbed version of the elliptic-parabolic system of Keller-Segel type: $$displaylines{ partial_tu - Delta u+ abla cdot(u abla v)=0,quad t>0,; xinmathbb{R}^2, cr -Delta v+v-v^p=u,quad t>0,; xinmathbb{R}^2,cr u(0,x) =u_0(x)ge 0,quad xinmathbb{R}^2, }$$ where $1 %K Multiple existence %K elliptic-parabolic system %K unconditional uniqueness %U http://ejde.math.txstate.edu/Volumes/2009/32/abstr.html