On representations of the elliptic quantum group $E_{\tau,\eta}(sl_2)$
  We describe representation theory of the elliptic quantum group $E_{\tau,\eta}(sl_2)$. It turns out that the representation theory is parallel to the representation theory of the Yangian $Y(sl_2)$ and the quantum loop group $ U_q(\widetilde { sl }_2)$. 
Giovanni Felder, Alexander Varchenko (University of North Carolina at   Chapel Hill)