def get_sigla(self, work):
        """Returns a list of all of the sigla for `work`.

        :param work: name of work
        :type work: `str`
        :rtype: `list` of `str`

        """
        return [os.path.splitext(os.path.basename(path))[0]
                for path in glob.glob(os.path.join(self._path, work, '*.txt'))]