Erl, T. (2004). Service-oriented architecture: a field guide to integrating XML and Web services. Prentice Hall.
Erl, Thomas, Hohpe, G., & Woolf, B. (2004). Enterprise integration patterns: Designing, building, and deploying messaging solutions. Addison-Wesley Professional.
Oberle, D. (2006). Semantic management of middleware (Vol. 1). Springer Science & Business Media.
Andrews, T., Curbera, F., Dholakia, H., Goland, Y., Klein, J., Leymann, F., & Trickovic, I. (2003). Business process execution language for web services.