On Some New Hadamard-Type Inequalities for Coordinated Quasi-convex   Functions
  In this paper, we establish some Hadamard-type inequalities based on coordinated quasi-convexity. Also we define a new mapping associated to coordinated convexity and we prove some properties of this mapping. 
M. Emin Ozdemir, Cetin Yildiz and Ahmet Ocak Akdemir
math.CA