package datastore;

import java.util.*;
import java.io.*;

public interface Document
{
    String getOid ();
    int getRank (DsDate date);
    String getTitle (DsDate date);
    String getPrintIssn (DsDate date);
    String getOnlineIssn (DsDate date);

    Document getParent (DsDate date);
    // List<Document> getChildren (DsDate date);
}