normalize_journal_to_iso4: Normalize journal names to ISO4 abbreviated form
Description
Converts all journal names to their ISO4 abbreviated form using LTWA.
Only uses English language entries from LTWA to avoid foreign word matches.
Usage
normalize_journal_to_iso4(journal_name, ltwa_db)
Value
Normalized journal name in ISO4 abbreviated form
Arguments
- journal_name
Character string with journal name
- ltwa_db
Data frame with LTWA database