an interesting topic, pdf available from academia.edu, for any who dare.
i couldn't find another source.
On the Divine and Eternal Solitude of the Star: Jung’s Seven Sermons mirrored to Sufi mysticism.
"a reflection on his mystical experiences held up against those found in Sufism, revealing commonalities to the paths embarked upon by seekers of truth through initiation, confrontation, annihilation and self-realisation."