I found out the definiton of interval edge colorings, concept put by Kamalian in various papers but could not find a graph depicting an example.I need images depicting interval edge coloring of a graph so that i get a clear picture of the concept.Kindly help.

I found out the definition of interval edge colorings, concept put by Kamalian in various papers but could not find a graph depicting an example. Where can I find pictures of explicit examples of interval edge colorings of graphs? It is hard to get a clear picture of the concept without such examples.