On the Quasi-Hopf structure of deformed double Yangians
  We construct universal twists connecting the centrally extended double Yangian DY(sl(2))_c with deformed double Yangians DY_r(sl(2))_c, thereby establishing the quasi-Hopf structures of the latter. 
D. Arnaudon, J. Avan, L. Frappat, E. Ragoucy, M. Rossi