Validate that an article cites a minimum number of EP document references
(TA-, PE-, A9-, procedure IDs). Articles lacking document citations may rely
on unsupported assertions.
Parameters
html: string
Complete article HTML
minRefs: number = 2
Minimum number of unique EP references required (default: 2)
Returns string|null
Warning message if density is insufficient, or null if acceptable
Validate that an article cites a minimum number of EP document references (TA-, PE-, A9-, procedure IDs). Articles lacking document citations may rely on unsupported assertions.