r-index: Quantifying the quality of an individual's scientific research output

There are quite many methods to asses the output of a research scientist, primarily by the number of papers he (she) publishes, where they are published and the number of times a particular paper is cited by other journals. But none of the methods give a possibility to identify the quality of the paper published. I present here r-index or method that can provide an insight into the quality of the research output, at the same time balancing the role of impact factors in which that research output is published.