Fields in the entries of the bibliographic database are attributed one of three classes: required, optional, or ignored. The table in this appendix lists the class of each field in each entry. See also Sect. 2.3.
| Entry | |||||||
| Field | article | book | booklet | conferencea | inbook | incoll.b | inproc.c |
| address | – | O | O | O | O | O | O |
| annote | – | – | – | – | – | – | – |
| author | R | R | R | R | R | R | R |
| booktitle | – | – | – | R | – | R | R |
| chapter | – | – | – | – | R | O | – |
| crossref | O | O | – | O | O | O | O |
| edition | – | O | – | – | O | O | – |
| editor | – | O | – | O | O | O | O |
| howpublished | – | – | O | – | – | – | – |
| institution | – | – | – | – | – | – | – |
| journal | R | – | – | – | – | – | – |
| key | O | O | O | O | O | O | O |
| month | – | – | – | – | – | – | – |
| note | O | O | O | O | O | O | O |
| number | – | O | – | O | O | O | O |
| organisation | – | – | – | O | – | – | O |
| pages | O | – | – | O | O | O | O |
| publisher | – | R | – | O | R | R | O |
| school | – | – | – | – | – | – | – |
| series | – | O | – | O | O | O | O |
| title | – | R | R | – | R | – | – |
| type | – | – | – | – | – | – | – |
| volume | O | O | – | O | O | O | O |
| year | R | R | R | R | R | R | R |
| Entry | |||||||
| Field | manual | masters.d | misc | phd.e | proc.f | tech.g | unpubl.h |
| address | O | O | – | O | O | O | – |
| annote | – | – | – | – | – | – | – |
| author | R | R | R | R | R | R | R |
| booktitle | – | – | – | – | – | – | – |
| chapter | – | – | – | – | – | – | – |
| crossref | – | – | – | – | – | – | – |
| edition | O | – | – | – | – | – | – |
| editor | – | – | – | – | O | – | – |
| howpublished | – | – | O | – | – | – | – |
| institution | – | – | – | – | – | O | – |
| journal | – | – | – | – | – | – | – |
| key | O | O | O | O | O | O | O |
| month | – | – | – | – | – | – | – |
| note | O | O | O | O | O | O | R |
| number | – | – | – | – | O | – | – |
| organisation | O | – | – | – | O | – | – |
| pages | – | – | – | – | – | – | – |
| publisher | – | – | – | – | O | – | – |
| school | – | R | – | R | – | – | – |
| series | – | – | – | – | O | – | – |
| title | R | – | O | – | R | R | R |
| type | O | O | O | O | O | O | O |
| volume | – | – | – | – | O | – | – |
| year | R | R | R | R | R | R | R |