’Few scholars, if any, know more than Folkerts about medieval Latin mathematical manuscripts... whoever is interested in medieval Latin mathematics can therefore learn from this book... Summing up, Folkert's description of 15th-century German algebra is certainly indispensable for any further discussion of the topic in that it lists all known important and several [...] minor manuscript sources and points to many of the parameters that have to be taken into account.’ Aestimatio ’Together with the previous volume on Essays in early Medieval Mathematics, ... the book under review is indispensable for all research scholars in the history of science in antiquity, the Islamic and European medieval period, and the Renaissance.’ Suhayl