Frishkopf, Michael. “Changing Modalities in the Globalization of Islamic Saint Veneration and Mysticism: Sidi Ibrahim Al-Dasuqi, Shaykh Muhammad ’Uthman Al-Burhani and Their Sufi Orders”.
Religious Studies and Theology, vol. 20, no. 1, Mar. 2001, pp. 1-49,
https://doi.org/10.1558/rsth.v20i1.1.