From the reviews: "This is the first volume of a two-volume set of papers dedicated to the memory of Zdzislaw Pawlak. ... Each chapter has its own set of references. There is a brief topical index at the end of the volume. The style of writing is at a very sophisticated level consistent with the companion second volume of the pair. The target readership is the specialist in the theory and applications of rough sets." (Anthony J. Duben, Computing Reviews, August, 2013)