Concurrent Zero-Knowledge With Additional Background by Oded Goldreich

From the reviews:

"Protocols that remain zero-knowledge when many instances are executed concurrently are called concurrent zero-knowledge. This book is very well suited for the reader who wants to know the state of the art of concurrent zero-knowledge proofs. … The book could be used as a textbook on advanced topics in cryptography. It is highly recommended to the newcomer in the field who wants technical information, and to the researcher in the area who would like a survey on concurrent zero-knowledge." (Yongge Wang, Mathematical Reviews, Issue 2007 m)