@namespace("eu.dnetlib.iis.metadataextraction.schemas")
protocol IIS{

    import idl "ReferenceBasicMetadata.avdl";

    record ReferenceMetadata {
        ReferenceBasicMetadata basicMetadata;
//      reference position in bibliography, starting with '1'
        union { null , int } position = null;
//      raw citation string held here just in case - maybe we will be able to use it
//      instead of basicMetadata if the latter one turns out to be of a low quality
        union { null , string } text = null;
    }

}