Definition:
The e-mail address of a publication author. If there is more than one author, this will be looped with _publ_author_name. The format of e-mail addresses is given in Section 3.4, Address Specification, of Internet Message Format, RFC 2822, P. Resnick (Editor), Network Standards Group, April 2001.Examples:
| name@host.domain.country |
| bm@iucr.org |
May appear in list containing _publ_author_name
Type: char
Category: publ_author
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