def get_latest_version(row):
    """Extracts latest version, parsing the year from it.
    If no latest version found, then default 1900 year is returned"""

    created = "Mon, 1 Jan 1900 00:00:00 GMT"
    journal_ref = row.get('versions', [])
    if len(journal_ref) > 0:
        latest_version = journal_ref[-1]
        created = latest_version.get('created', "Mon, 1 Jan 1900 00:00:00 GMT")

    try:
        return int(created.split(' ')[3])
    except IndexError:
        return 1900

    return 1900