Data Item _citation.year
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General 
- Item name
- _citation.year
- Category name
- citation
- Attribute name
- year
- Required in PDB entries
- Used in current PDB entries
- Yes, in about 85.1 % of entries
Item Description
The year of the citation; relevant for both journal articles
and book chapters.
Additional Descriptive Information for Depositors
The year in which the citation was published.
Item Example
1984
Additional Item Example for Depositors
1981
Data Type 
- Data type code
- int
- Data type detail
- int item types are the subset of numbers that are the negative or positive integers.
- Primitive data type code
- numb
- Regular expression
- -?[0-9]+
Aliases
| Alias Item Name | Dictionary Name | Dictionary Version |
|---|---|---|
| _citation_year | cif_core.dic | 2.0.1 |