@ARTICLE { AUTHOR = "Marco Kuhrmann and Paolo Tell and Regina Hebig and Jil Kl{\"u}nder and J{\"u}rgen M{\"u}nch and Oliver Linssen and Dietmar Pfahl and Michael Felderer and Christian R. Prause and Stephen G. MacDonell and Joyce Nakatumba-Nabende and David Raffo and Sarah Beecham and Eray T{\"u}z{\"u}n and Gustavo L{\'o}pez and Nicolas Paez and Diego Fontdevila and Sherlock A. Licorish and Steffen K{\"u}pper and G{\"u}nther Ruhe and Eric Knauss and {\"O}zden {\"O}zcan-Top and Paul Clarke and Fergal McCaffery and Marcela Genero and Aurora Vizcaino and Mario Piattini and Marcos Kalinowski and Tayana Conte and Rafael Prikladnicki and Stephan Krusche and Ahmet Coskuncay and Ezequiel Scott and Fabio Calefato and Svetlana Pimonova and Rolf-Helge Pfeiffer and Ulrik Pagh Schultz and Rogardt Heldal and Masud Fazal-Baqaie and Craig Anslow and Maleknaz Nayebi and Kurt Schneider and Stefan Sauer and Dietmar Winkler and Stefan Biffl and Cecilia Bastarrica and Ita Richardson", TITLE ="What Makes Agile Software Development Agile", JOURNAL = "IEEE Transactions on Software Engineering (TSE)", YEAR = "2021", PUBLISHER = "IEEE Computer Society Press", ADDRESS = "Los Alamitos, CA, USA", ISSN = "0098-5589" }