Piero Boitani 
Dante”s Poetry of Donati: The Barlow Lectures on Dante Delivered at University College London, 17-18 March 2005: No. 7 [PDF ebook] 
The Barlow Lectures on Dante Delivered at University College London, 17-18 March 2005

‘Members of the Florentine family of the Donati feature prominently in Dante”s Divine Comedy . Their presence is explored by Piero Boitani, as a ”comedy” within the Comedy, in close readings of the three major episodes in which they appear, one for each of Inferno , Purgatorio , and Paradiso .’