Louise Lorentsen Antti-Pekka Tuovinen Jianli Xu Modelling Feature Interactions in Mobile Phones. 7-13 2001 FICS http://www.info.uni-karlsruhe.de/~pulvermu/workshops/ecoop2001/proceedings/FICS2001.pdf conf/ecoop/2001fics db/conf/ecoop/fics2001.html#LorentsenTX01