def clean_word(w: str) -> str:
    """
    Remove specific characters from word in a paper header
    """
    return ''.join([
        c for c in w if c not in [
            '.', ',', ':', '´', '*', '∗', '†', '†', '‡', '¨', '`', '§', '⇤', '£', '0', '1', '2',
            '3', '4', '5', '6'
        ]
    ])