A survey of software learnability: metrics, methodologies and guidelines.

Tovi Grossman George W. Fitzmaurice Ramtin Attar A survey of software learnability: metrics, methodologies and guidelines. 649-658 2009 CHI http://doi.acm.org/10.1145/1518701.1518803 conf/chi/2009 db/conf/chi/chi2009.html#GrossmanFA09