Usability in Agile Software Development: Extending the Interaction Design Process with Personas Approach. - Jukka Haikara (XP, 2007)

The impact of agile practices on communication in software development. - Minna Pikkarainen; Jukka Haikara; Outi Salo; Pekka Abrahamsson; Jari Still (Empir. Softw. Eng., 2008)