Siyar of al-Shammakhi, and Rubinacci reviewed K. al-Jawahir of al-Barradi. Lewicki, also, possessing a copy of the Siyar of al-Wisyani, published a series of articles using material from al-Wisyani and the other Ibadhi historical works. These cover a number of topics concerned with Ibadhi studies and with Ibadhi communities in their various countries, especially North Africa, their intellectual life and commercial and political activities. His studies appear to be the most satisfactory of those so far discussed despite a few minor points where he was misled mainly because of the lack of material. Brief historical accounts of the Ibadhis of North Africa were given first by Strothmann in his article "Berber und Ibaditen," then a fuller account of the Ibadhis, together with the other Kharijites in north Africa, was presented later by Chaikh Bekri in his article "Le Kharijisme Berber" The Ibadhi sources were used recently by the Italian scholars in the study of the early political conflict in Islam, notably by Vaglieri for an account of the conflict between Ali and Muaawiyah, and by Rubinacci for an account of the relation between the Ummayad Caliph 'Abd al-Malik b. Marwan and the Ibadhis.

Western scholars also dealt with the Ibadhi theology in a number of articles. These appeared after Motylinski presented a French translation of the Ibadhi creed of Amr b, Jumai; i in the year 1905. Nailino afterwards wrote his notes on what he considered to be a Mu'tazili influence on Ibadhi theology. Marino followed up this line of study in his article "Note de teologia ibadita". In this field, the Polish scholar Smogorzewski wrote an article on difference between Ibadhis and Malikis based on a few lines of verse by an anonymous Ibadhi "Un poeme abadite sur certaines divergence enterlest Malikites et les Abadites". Lewicki on his part wrote an informative article on the subdivisions of the Ibadhiyah. There is also a study of the Ibadhi creed of Abu Zakariya' al-Jannnawi with an Italian translation and an examination of its relation to other Islamic sects by Rubinacci.

Ibadhi Jurisprudence has not been dealt with seriously up to the present time. A few articles have appeared in which minor aspects of this subject were treated. There is the article by Rubinacci "La purita rituale secondo gli Ibaditi" in which the presented a comparative study of the subject al-taharah, in Ibadhi and other Islamic schools. There is also an article dealing with the authorities who transmitted the Ibadhi doctrine in North Africa written by Crupi La Rosa in Italian, and based on the work of the modern scholar, 'Abdullah b Yahya al-Baruni, Sullam al-ammah wa al-mubtadi'in. In French there is the work of Goichon on "La vie feminine au Mzab", and also the work of Milliot, "Recueil de deliberations des djema'a du Mzab" in which some points of Ibadhi law were touched upon.

Few other articles were directed to the study of the Ibadhi organization of the