This pattern correctly captures all the specified target items without capturing any other undesired text. Each item has its unique structure which is accounted for explicitly in the regex. The pattern uses alternation for each target and ensures proper escaping where required (like for backslashes, braces, and special characters). Example: 'REF#2023-A-123/456' matches the exact structure with REF#, letter ranges, year, and specific delimiters. Similarly, for scientific notations and dated entries, it handles the exact formatting.