Isometry on Interval-valued Fuzzy Graphs
  Especially in research areas of computer science such as data mining, image segmentation, clustering image capturing and networking. The interval-valued fuzzy graphs are more flexible and compatible than fuzzy graphs due to the fact that they allowed the degree of membership of a vertex to an edge to be represented by interval valued in [0,1] rather than the crisp real values between 0 and 1. 
Hossein Rashmanlou and Madhumangal Pal
cs.DM