Laszlo Sandor Chardonnens, Two newly discovered mantic dream alphabets in medieval French, Medium Aevum, 80, 2011 : p. 111-116
Discusses the manuscript context, meaning and sources of these alphabets contained in MSS. London, B.L., Add. 15236 and Oxford, Bodleian Library, Digby 86 (résumé Medium Aevum)