Kernel of the Kernel : Concerning the Wayfaring and Spiritual Journey of the People of Intellect (Risala-yi Lubb al-Lubab dar Sayr wa Suluk-i Ulu'l Albab) A Shi'i Approach to Sufism. - Ṭabāṭabāʼī, Muḥammad Ḥusayn (SUNY series in Islam., 2003)