@TechReport{mlkit3, author = {Mads Tofte and Lars Birkedal and Martin Elsman and Niels Hallenberg and Tommy H{\o}jfeld Olesen and Peter Sestoft and Peter Bertelsen}, title = {Programming with Regions in the {ML Kit} (for Version 3)}, institution = {Department of Computer Science, University of Copenhagen}, year = {1998}, month = {December}, note = {Technical Report 98/25} }