Hariyanto, E., P. Sihombing, E. B. Nababan, and S. Sawaluddin. “Development Hybrid OA-RG With Multi-Row Time-Aggregated Cover Cuts for Solving MINLP in Coffee Plantation Maintenance”. Eastern-European Journal of Enterprise Technologies, vol. 6, no. 4 (138), Dec. 2025, pp. 36-48, doi:10.15587/1729-4061.2025.342750.