from typing import Optional
import re


def get_dblp_bibtex_path(url: str) -> Optional[str]:
    """Get the end of the DBLP bibtex URL path based on the listing path."""
    try:
        (response_type, dblp_id) = url.split('#')
        type_match = re.search(r'(\/journals\/|conf\/[^/]+)', response_type)
        if type_match:
            if re.search('journals', type_match.group(0)):
                return f'journals/corr/{dblp_id}'
            else:
                return f'{type_match.group(0)}/{dblp_id}'
        else:
            return None
    except ValueError:
        return None