Category:Pages with BIBCODE errors

This is a tracking category.

It is used to build and maintain a list or lists of pages—primarily for the sake of the lists themselves and their use in article and category maintenance. It is not part of the encyclopedia's categorization scheme.

More information:

• This category is hidden on its member pages—unless the corresponding user preference (Appearance → Show hidden categories) is set.
• These categories are used to track, build and organize lists of pages needing "attention en masse" (for example, pages using deprecated syntax), or that may need to be edited at someone's earliest convenience.
• These categories also serve to aggregate members of several lists or subcategories into a larger, more efficient list (discriminated by classifications).
• Typically, tracking categories are automatically populated by templates invoked in pages or by the MediaWiki software (see Special:TrackingCategories for an overview of the latter).

This is a tracking category for {{bibcode}} templates that have errors.

The {{bibcode}} template checks the bibcode value to see if it has the proper format.^[1] When the assigned value does not have the proper format, the template returns an error message along with the type of error that is encountered:

Check bibcode <type>

Bibcode template values are expected to match these requirements:

length must be 19 characters (<type> = 'length')

characters in position(s): (except as specified otherwise, violations produce 'value' in the <type> portion of the error message):

1–4 must be digits and must represent a year in the range of 1000 – next year (<type> = 'year')

5 must be a letter

6–8 must be letter, ampersand, or dot (ampersand cannot directly precede a dot; &. (<type> = 'journal'))

9 must be letter or dot

10–18 must be letter, digit, or dot

19 must be a letter or dot

To resolve this error, ensure that the assigned bibcode value is correct.