On contingent claims pricing in incomplete markets: A risk sharing   approach
  In an incomplete market setting, we consider two financial agents, who wish to price and trade a non-replicable contingent claim. Assuming that the agents are utility maximizers, we propose a transaction price which is a result of the minimization of a convex combination of their utility differences. We call this price the risk sharing price, we prove its existence for a large family of utility functions and we state some of its properties. As an example, we analyze extensively the case where both agents report exponential utility. 
Michail Anthropelos, Nikolaos E. Frangos, Stylianos Z. Xanthopoulos,   Athanasios N. Yannacopoulos