Steven Fraser Pekka Abrahamsson Robert Biddle Jutta Eckstein Philippe Kruchten Dennis Mancl Werner Wild Culture and Agile: Challenges and Synergies. 251-255 2008 XP http://dx.doi.org/10.1007/978-3-540-68255-4_44 conf/xpu/2008 db/conf/xpu/xp2008.html#FraserABEKMW08