def _parse_article_authors(article):
    """Parse authors from the article"""
    author_urls = article.select("div.field-name-field-auteurs a")

    if len(author_urls) == 0:
        return None

    authors = list(map(lambda a: a.text.strip(), author_urls))

    assert len(authors) >= 1

    if len(authors) == 1:
        author_string = authors[0]
    else:
        author_string = ', '.join(authors[:-1]) + ' & ' + authors[-1]

    return author_string