1. Engwall, M., & Jerbrant, A. (2003). The resource allocation syndrome: the prime challenge of multi-project management? International Journal of Project Management, 21(6), pp. 403-409. The paper defines the syndrome as "a situation where there is an imbalance between the number of projects in a firm and its available resources to perform these projects." (Abstract, p. 403). DOI: https://doi.org/10.1016/S0263-7863(02)00113-800113-8)
2. Goldratt, E. M. (1997). Critical Chain. The North River Press. This foundational text explains the negative effects of multitasking in multi-project environments, which is a primary symptom of the resource allocation syndrome. It argues that attempting to advance all projects simultaneously with limited resources is a core cause of project delays (Chapters 1-4).
3. Meredith, J. R., Shafer, S. M., Mantel Jr, S. J., & Sutton, M. M. (2017). Project Management: A Managerial Approach. 10th ed. John Wiley & Sons. Chapter 7, "Resource Allocation," discusses the problems of resource loading and leveling, highlighting that when resource demands from multiple projects exceed availability, conflicts and delays are inevitable.