ebrary, Inc, Little, R. G., Pattak, P. B., & Schroeder, W. A. (1998). Use of underground facilities to protect critical infrastructures: Summary of a workshop. National Academy Press.

ebrary, Inc, Richard G. Little, Paul B. Pattak, and Wayne A. Schroeder. Use of Underground Facilities to Protect Critical Infrastructures: Summary of a Workshop. Washington, D.C.: National Academy Press, 1998.

ebrary, Inc, et al. Use of Underground Facilities to Protect Critical Infrastructures: Summary of a Workshop. National Academy Press, 1998.