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In recent years the Extreme Programming (XP) community has grown substantially. Many XP projects have started and a substantial amount are already finished. As the interest in the XP approach is constantly increasing worldwide throughout all software intensive application domains, it was time to start a first survey on XP. This paper presents the results of 45 evaluated questionnaires that have been received during the Summer 2001 survey.
Rumpe⋆ et al. (Mon,) studied this question.