Amela Karahasanovic Unni Nyhamar Hinkel Dag I. K. Sjøberg Richard C. Thomas Comparing of feedback-collection and think-aloud methods in program comprehension studies. 139-164 2009 28 Behaviour & IT 2 http://dx.doi.org/10.1080/01449290701682761 db/journals/behaviourIT/behaviourIT28.html#KarahasanovicHST09