TIM-6590 V2

de Matta, R. (2017). Contingency planning during the formation of a supply chain. Annals of Operations Research, 1–2, 45-75.

Swanson, M., Bowen, P., Phillips, A.W., Gallup, D., & Lynes, D. (2010). Contingency planning guide for federal information systems. NIST-SP-800-34, Rev. 1.
The National Institute of Standards and Technology publishes standards to be observed and followed for all federal agencies of the U.S. While this is a dated reference, it is still the valid version used by U.S. federal government to plan and manage disaster recovery and business continuity efforts. Read Chapters 1-3 (pp. 1-31).