1. Miner G, Elder J, Hill T, Nisbet R, Delen D, Fast A (2012) Practical text mining and statistical analysis for non-structured text data applications. 1st edn. Academic Press, Boston.
2. Aggarwal CC, Zhai C (eds)2012. Mining text data. Springer, Durham.
3. Kitchenham B, Charters S (2007) Guidelines for performing systematic literature reviews in software engineering. EBSE Technical Report EBSE-2007-01. Keele University and Durham University Joint Report, Durham, UK.
4. Petersen K, Feldt R, Mujtaba S, Mattsson M (2008) Systematic mapping studies in software engineering In: EASE 2008: Proceedings of the 12th International Conference on Evaluation and Assessment in Software Engineering. EASE’08, 68–77. British Computer Society, Swinton, UK.
5. Brereton P, Kitchenham BA, Budgen D, Turner M, Khalil M (2007) Lessons from applying the systematic literature review process within the software engineering domain. J Syst Softw80(4): 571–583.