CASA Guides for combining Interferometric data:

• Data Weights and Combination
• Combining 7m+12m data: M100 - CASA 4.3.0
• VLA Data Combination - CASA 5.7.0

Literature relevant to Data Combination:

• PHANGS–ALMA Data Processing and Pipeline
• 1995AJ....110.2037J - Relevancy: Flux Determination from Multiconfiguration Data (VLA)