public static IEnumerable<Resource.Citation> Citations(this Jstor.Domain.dc record)
{
var citations = new List<string>();
if (record.identifier == null) yield break;
foreach (var identifier in record.identifier)
{
var id = identifier.Value.Split(' ');
if (id[0] == "UID:")
{
var resource = new Resource(id[1]);
foreach (var citation in resource.Citations())
{
yield return citation;
}
yield break;
}
}
}