Artem Marchenko Pekka Abrahamsson Tuomas Ihme Long-Term Effects of Test-Driven Development A Case Study. 13-22 2009 XP http://dx.doi.org/10.1007/978-3-642-01853-4_4 conf/xpu/2009 db/conf/xpu/xp2009.html#MarchenkoAI09