Roland Speicher: Combinatorial Theory of the Free Product with Amalgamation and Operator-Valued Free Probability Theory

Memoirs of the AMS, March 1998, volume 132, number 627

Here are pdf-versions by the author of the chapters of the book:

Note that what is called there (in particular, in Chapter 4, Def. 4.2.3) a “B-Gaussian distribution” is now usually addressed as a “B-valued semicircular distribution.”