Owing to the fact that a Living Reviews in Relativity article may evolve over time, we recommend to cite the article as follows:
Max Niedermaier and Martin Reuter,
"The Asymptotic Safety Scenario in Quantum Gravity",
Living Rev. Relativity 9, (2006), 5. URL (accessed <date>):
The date given as <date> then uniquely identifies the version of the article you are referring to.