1. Abadi M, Glew N, Horne B, Pinkas B (2002) Certified email with a light on-line trusted third party: design and implementation. In: Proceedings of the eleventh international conference on world wide web, ACM Press, pp 387–395, https://doi.org/10.1145/511446.511497
2. Afandi R, Zhang J, Gunter CA (2006) AMPol-Q: adaptive middleware policy to support QoS. In: Proceedings of the 4th international conference on service-oriented computing, Springer, Berlin, Heidelberg, ICSOC’06, pp 165–178, https://doi.org/10.1007/11948148_14
3. Anglano C (2014) Forensic analysis of WhatsApp messenger on Android smartphones. Digit Investig 11(3):201–213. https://doi.org/10.1016/j.diin.2014.04.003, Special Issue: Embedded Forensics
4. Bajaj S, Box D, Chappell D, Curbera F, Daniels G, Hallam-Baker P, Hondo M, Kaler C, Langworthy D, Nadalin A, Nagaratnam N, Prafullchandra H, von Riegen C, Roth D, Schlimmer J, Sharp C, Shewchuk J, Vedamuthu A, Ümit Yalçinalp, Orchard D (2006) Web Services Policy 1.2 - Framework (WS-Policy). W3C member submission, World Wide Web Consortium, URL https://www.w3.org/Submission/WS-Policy/
5. Bartel M, Boyer J, Fox B, LaMacchia B, Simon E (2002) XML-signature syntax and processing. W3C recommendation, World Wide Web Consortium, URL www.w3.org/TR/xmldsig-core/