I want to find out the book which i've read some time ago. Now i don't remember who were the authors and exact title. This book was on scattering theory or S-matrix or something similiar. I remember, that there are chapters with titles like S-matrix for scattering of spin 0, spin 1. The authors of the book were 4 or 5 people, most of them italians. Surnames were like De Benedetti, Bernardini or like this. The pub date - 196x or 197x. Anyone knows about this book or maybe point out where can i look for it. Thanks in advance.