"This book provides essential material that is very timely and interesting and provides an excellent treatise on the theory, methodology, and applications of directional and axial statistics." (Technometrics, November 2008)

"This book has been written as a drastic revision and major extension to Statistics of Directional Data. It is a worthy successor to that book and will surely become the definitive reference on this subject are for many years." (Short Book Reviews, Vol. 20, No. 3, December 2000)

"The text will be an invaluable source of reference for researchers and practitioners alike working with directional data..." (The Statistician, Vol. 50, 2001)

"...a highly valuable and nicely written contribution" (Statistics and Decisions, Vol 19/2, 2001)

"In coverage and presentation, the current book dominates?the starting place for anyone wanting to make inferences using directional data or wishing to pursue research in this area." (Mathematical Reviews, 2003b)