1. Standard Practice For Selecting Proportions for Structural Lightweight Concrete;ACI 211.2-91,1994
2. Guide to Structural lightweight Aggregate Concrete;ACI 213R-87,1994
3. Use of Fly Ash in Concrete;ACI 226.3R-87,1994
4. lightweight Aggregates US patent;Ahlbeck,1982
5. Lightweight Aggregate Concrete;Andrew,1974