Jacob Hoftijzer and Gerrit van der Kooij, Aramaic Texts from Deir ‘Alla (Leiden: Brill, 1976). There are now many studies of this text; see the contributions by Lemaire (“L’inscription de Balaam trouvée à Deir ‘Alia: épigraphie”) and Baruch Levine (“The Balaam Inscription: Historical Aspects” in Biblical Archaeology Today [Jerusalem: Israel Exploration Society, 1985)]