Mikko Korkala Pekka Abrahamsson Pekka Kyllönen A Case Study on the Impact of Customer Communication on Defects in Agile Software Development. 76-88 2006 conf/agiledc/2006 AGILE http://doi.ieeecomputersociety.org/10.1109/AGILE.2006.1 db/conf/agiledc/agile2006.html#KorkalaAK06