1. CIPS L5M8 Study Guide: Chartered Institute of Procurement & Supply. (2018). L5M8 Innovation in Procurement and Supply Study Guide. Stamford, UK: Profex Publishing. In Chapter 3, 'Change Management,' the guide defines open-ended problems as situations where neither the 'what' nor the 'how' is known, citing complex and unpredictable environments as examples.
2. Academic Publication (Project Management Typology): Turner, J. R., & Cochrane, R. A. (1993). Goals-and-methods matrix: coping with projects with ill defined goals and/or methods of achieving them. International Journal of Project Management, 11(2), 93-102. This paper's framework classifies projects based on the clarity of goals and methods. Weather prediction falls into Type 4 projects ('a walk in the fog'), where both goals and methods are unclear, aligning with the 'open-ended' concept. DOI: https://doi.org/10.1016/0263-7863(93)90017-H90017-H).
3. Foundational Text (Change Typology): Obeng, E. (1994). All Change!: The Project Leader's Secret Handbook. Financial Times/Prentice Hall. This book is a foundational source for the classification of change/project types, including 'closed' (Painting by Numbers), 'contained' (Quest), and 'open-ended' (A Walk in the Fog), which directly supports the classification of an unpredictable situation like weather forecasting.