Our reference extraction script keeps (presumably citation) templates that meet the following criteria:
- Their name is listed in our list of citation templates, and
- The citation template has a value in the "url" field.
Otherwise, template is simply ignored.
However, some templates have aliases for the "url" parameter. For example, the French template "Lien web" has equivalent "url texte" and "lire en ligne" parameters.
Therefore, instead of looking for a URL in the "url" parameter alone to decide whether to keep or ignore a template, consider using the parameters declared in a "url" column in our list of citation templates.