Advanced Informatics School;
Universiti Teknologi Malaysia;
Kuala Lumpur;
Malaysia;
Department of Software Engineering;
College of IT;
Universiti Tenaga Nasional;
Kajang;
Malaysia;
Faculty of Computer Science and Information Technology;
Universiti Putra Malaysia;
Serdang;
Malaysia.;
Requirements; Engineering; (RE); Process; Improvement; Maturity; Model;