From the reviews:
“The volume is a comprehensive, carefully organized, in-depth treatise on intuitionistic fuzzy sets ... . The material structured into 11 chapters is split into several main parts. The concepts of intuitionistic fuzzy sets (IFS) are motivated through a series of illustrative examples including those showing their geometric interpretations. ... The exposure of the formal material is good with well thought-out arguments and a wealth of illustrative material. Overall, the book provides a very good reading for those interested in IFS.” (Witold Pedrycz, Zentralblatt MATH, Vol. 1247, 2012)