<etal> (Et Al) Description .email comment.
Description
This empty element indicates that there are other authors, editors or patent owners, but their names are not included. It follows one or more full author names:
<author-ref>
  <surname>Bolden</surname>
  <givenname>S.</givenname>
</author-ref>
<author-ref>
  <etal/>
</author-ref>
S. Bolden et al.
Parent Elements
The elements listed below may directly contain this element. They are "parent" elements. Elements in referenced groups are included, up to two levels of group nesting.
Model Diagram
The DTD model for this element:
 (no content allowed) 
DTD Definition
The DTD contains the following element and attribute definitions (note that embedded links are to definitions within the DTD page of this guide):
<!ELEMENT etal                           EMPTY>
<!ATTLIST etal
               %a-group-CommonIDAttrs;>
.
Defined in DTD section Back Matter : References : Book References
General Attributes (shared with other elements)
Common Optional ID Attributes (a-group-CommonIDAttrs)