 Some consider it one of the best sources for post-Visigothic history and for the story of the Arabian conquest of Hispania and Septimania; it provided the basis for Roger Collins, "The Arab Conquest of Spain, 711-797", the first modern historian to utilise it so thoroughly.It contains the most detailed account of the Battle of Poitiers-Tours.The style of the entries resembles the earlier chronicler John of Biclar, similarly covering the topics of rulers, rebellions, wars, the church and plagues (but in greater detail, with a more eccentric prose style that has made the work difficult for modern scholars to decipher).