Models for Mobile Application Maintenance Based on Update History Topics: "3A" (Agile, Aspect-oriented and Agent-oriented) Software Engineering; "3A" (Agile, Aspect-oriented and Agent-oriented) Software Engineering; Software Process Improvement In Proceedings of the 9th International Conference on Evaluation of Novel Approaches to Software Engineering ENASE - Volume 1, 212-217, 2014 , Lisbon, Portugal