Unmehopa, Musa. The open mobile alliance : delivering service enablers for next-generation applications / Musa Unmehopa, Michael Brenner. - Chichester, England : John Wiley, 2008. - xxv, 492 p. : ill. ; 24 cm. Includes index. ISBN: 9780470519189 (cloth) Subjects--Topical Terms: Mobile communication systems.