Data Citations

Protein Data Bank in Europe sample:
...
<ref>
<mixed-citation publication-type="data">Kollman JM, Charles EJ, Hansen JM, 
<year iso-8601-date="2014">2014</year>, <data-title>Cryo-EM structure of 
the CTP synthetase filament</data-title>, <ext-link ext-link-type="uri" 
xlink:href="http://www.ebi.ac.uk/pdbe/entry/EMD-2700">
http://www.ebi.ac.uk/pdbe/entry/EMD-2700</ext-link>, Publicly available 
from <source>The Electron Microscopy Data Bank (EMDB)</source>.</mixed-citation>
</ref>
...
GigaScience sample:
...
<ref>
<mixed-citation publication-type="data">Zheng LY, 
Guo XS, He B, Sun LJ, Pi CM, Jing H-C: Genome data from 
[<ext-link ext-link-type="uri" xlink:href="http://dx.doi.org/10.5524/100012">
http://dx.doi.org/10.5524/100012</ext-link>] <source>GigaScience</source> 
<year iso-8601-date="2011">2011</year>.</mixed-citation>
</ref>
...
Data in figshare, referenced through a DOI:
...
<ref>
<mixed-citation publication-type="data">Di Stefano B, Collombet S, 
Graf T. <source>Figshare</source> <ext-link ext-link-type="doi" 
assigning-authority="figshare" 
xlink:href="http://dx.doi.org/10.6084/m9.figshare.939408">
http://dx.doi.org/10.6084/m9.figshare.939408</ext-link> 
(<year iso-8601-date="2014">2014</year>).</mixed-citation>
</ref>
...
Dryad Digital Repository, referenced through a DOI:
...
<ref>
<mixed-citation publication-type="data">Dubuis JO, Samanta R, 
Gregor T (<year iso-8601-date="2013">2013</year>).  Data from: 
<data-title>Accurate measurements of dynamics and reproducibility 
in small genetic networks</data-title>. <source>Dryad Digital 
Repository</source> doi:<pub-id pub-id-type="doi">10.5061/dryad.35h8v</pub-id>
</mixed-citation>
</ref>
...
GenBank Protein sample:
...
<ref>
<mixed-citation publication-type="data">
<data-title>Homo sapiens cAMP responsive element binding protein 1 
(CREB1), transcript variant A, mRNA</data-title>. <source>GenBank</source> 
<ext-link ext-link-type="genbank" xlink:href="NM_004379.3">NM_004379.3</ext-link>.
</mixed-citation>
</ref>
...
RNA Sequence sample:
...
<ref>
<mixed-citation publication-type="data">Xu, J. <etal/> 
<data-title>Cross-platform ultradeep transcriptomic profiling 
of human reference RNA samples by RNA-Seq</data-title>. 
<source>Sci. Data</source> <volume>1</volume>:<elocation-id>140020</elocation-id>.  
doi: <pub-id pub-id-type="doi">10.1038/sdata.2014.20</pub-id> 
(<year iso-8601-date="2014">2014</year>).</mixed-citation>
</ref>
...
Element Citation: Analyzed data sources are mentioned in the Data Availability Statement section, and then the data sources are referenced in the References List within that section.
...
<back>
...
<sec sec-type="data-availability">
<title>Data Availability</title>
<p>The following datasets were generated or analyzed for this study:</p>
<ref-list>
<ref id="pone.0167830.data001">
   <label>D1</label>
   <element-citation publication-type="data" 
     specific-use="isSupplementedBy">
     <name><surname>Read</surname><given-names>K</given-names></name>
     <data-title>Sizing the Problem of Improving Discovery and Access
       to NIH-funded Data: A Preliminary Study (Datasets)</data-title>
     <source>Figshare</source><year iso-8601-date="2015">2015</year>
     <pub-id pub-id-type="doi" assigning-authority="figshare"
        xlink:href="https://doi.org/10.6084/m9.figshare.1285515">
        https://doi.org/10.6084/m9.figshare.1285515</pub-id>
   </element-citation>
</ref>
    
<ref id="pone.0167830.data002">
   <label>D2</label>
   <element-citation publication-type="data" 
     specific-use="references">
     <name><surname>Kok</surname><given-names>K</given-names></name>
     <name><surname>Ay</surname><given-names>A</given-names></name>
     <name><surname>Li</surname><given-names>L</given-names></name>
     <data-title>Genome-wide errant targeting by Hairy</data-title>
     <source>Dryad Digital Repository</source>
     <year iso-8601-date="2015">2015</year>
     <pub-id pub-id-type="doi" assigning-authority="dryad"
       xlink:href="https://doi.org/10.5061/dryad.cv323">
        https://doi.org/10.5061/dryad.cv323</pub-id>
   </element-citation>
</ref>
    
<ref id="pone.0167830.data003">
   <label>D3</label>
   <element-citation publication-type="data" 
     specific-use="references">
     <name><surname>Hoang</surname><given-names>C</given-names></name>
     <name><surname>Swift</surname><given-names>GH</given-names></name>
     <name><surname>Azevedo-Pouly</surname><given-names>A</given-names>
       </name>
     <name><surname>MacDonald</surname><given-names>RJ</given-names></name>
     <data-title>Effects on the transcriptome of adult mouse pancreas
        (principally acinar cells) by the inactivation of the Ptf1a gene 
        in vivo</data-title>
     <source>NCBI Gene Expression Omnibus</source>
     <year iso-8601-date="2015">2015</year>
     <pub-id pub-id-type="accession" 
        assigning-authority="NCBI"
        xlink:href="https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE70542"
        >GSE70542</pub-id>
   </element-citation>
</ref>
</ref-list>
</sec>
</back>
...

Mixed Citation: Analyzed data are mentioned in the Data Availability Statement section, and then the data are referenced in the References List within that section.
...
<back>
...
<sec sec-type="data-availability">
<title>Data Availability</title>
<p>The following datasets were generated or analyzed for this study:</p>
<ref-list>
<ref id="pone.0167830.data001">
<label>D1</label>
<mixed-citation publication-type="data" 
  specific-use="isSupplementedBy">
<string-name><surname>Read</surname> <given-names>K</given-names></string-name>. 
 <data-title>Sizing the Problem of Improving Discovery and Access
 to NIH-funded Data: A Preliminary Study (Datasets)</data-title>. 
 <source>Figshare</source>. <year iso-8601-date="2015">2015</year>. 
 <pub-id pub-id-type="doi" assigning-authority="figshare"
   xlink:href="https://doi.org/10.6084/m9.figshare.1285515">View Data</pub-id>
</mixed-citation>
</ref>
    
<ref id="pone.0167830.data002">
<label>D2</label>
<mixed-citation publication-type="data" 
  specific-use="references">
<string-name><surname>Kok</surname> <given-names>K</given-names></string-name>, 
 <string-name><surname>Ay</surname> <given-names>A</given-names></string-name>, 
 <string-name><surname>Li</surname> <given-names>L</given-names></string-name>.
 <data-title>Genome-wide errant targeting by Hairy</data-title>. 
 <source>Dryad Digital Repository</source>. <year iso-8601-date="2015">2015</year>. 
 <pub-id pub-id-type="doi" assigning-authority="dryad"
   xlink:href="https://doi.org/10.5061/dryad.cv323">View Data</pub-id>
</mixed-citation>
</ref>
    
<ref id="pone.0167830.data003">
<label>D3</label>
<mixed-citation publication-type="data" 
  specific-use="references">
<string-name><surname>Hoang</surname> <given-names>C</given-names></string-name>,
 <string-name><surname>Swift</surname> <given-names>GH</given-names></string-name>,
 <string-name><surname>Azevedo-Pouly</surname> <given-names>A</given-names></string-name>,
 <string-name><surname>MacDonald</surname> <given-names>RJ</given-names></string-name>.
 <data-title>Effects on the transcriptome of adult mouse pancreas
 (principally acinar cells) by the inactivation of the Ptf1a gene 
 in vivo</data-title>. <source>NCBI Gene Expression Omnibus</source>.
 <year iso-8601-date="2015">2015</year>.
 <pub-id pub-id-type="accession" 
   assigning-authority="NCBI"
   xlink:href="https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE70542"
   >View Data</pub-id>
</mixed-citation>
</ref>
</ref-list>
</sec>
</back>
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