The book was very interesting for me as my PhD thesis are connected with differential quadrature (DQ). It contains quite new informations about improveing of the DQM. It base on authors articles from several last years. The negative is that the articles are shorten, so sometimes you have to look for them in the publication data base to find details. Sometimes it is not so clear explain from where the autors obtain there formulas [there should be more references to literature] - sometimes it is possible to find theorems that fit even beter to the subject. Anyway I am very happy to have this book as it gives me a lot handy informations about directions of the DQ idea develop.