1. Granularity of locks and degrees of consistency in a shared data base;Gray,1976
2. Transaction Processing: Concepts and Techniques;Gray,1993
3. Transactions and consistency in distributed database systems;Traiger;ACM Trans. on Database Systems,1982
4. Concurrency Control and Recovery in Database Systems;Bernstein,1987
5. Distributed Databases, Principles and Systems;Ceri,1986