Private security services.

Security metrics management :how to measure the costs and benefits of security / by: (Language materials, printed)

The market for force :the consequences of privatizing security / by: (Language materials, printed)

Mercenary troops.

Internal security.

Security systems.

Corporations- Security measures

National security.

Contracting out.

Privatization.

Corporations- Security measures.

Private security services.

Police- Contracting out.