One can but rejoice that the Cerf Publishing House published such a scholarly and deep study. It honors Qumran research in the French language and marks a considerable advance in terms of techniques implemented and results achieved.
I warmly thank Christian Grappe for this great review, which I invite you to read below:
Grappe, c.r. Le premier manuscrit du Livre d’Hénoch, RHPR 89/3 (2009), 374-375