1. Requirements Engineering: A Good Practice Guide;Sommerville,1997
2. Requirements Engineering: Fundamentals, Principles, And Techniques;Pohl,2010
3. Naming the pain in requirements engineering - Contemporary problems, causes, and effects in practice;Fernández;Empir. Softw. Eng.,2017
4. Requirements engineering and agile software development;Paetsch,2003
5. Automatically classifying functional and non-functional requirements using supervised machine learning;Kurtanović,2017