@article{dehdashti1988emm,
	title = {Evaluation of mental models and meta models through interactions between users and helpers about software usage problems},
	author = {P. Dehdashti},
	journal = {ACM SIGCHI Bulletin},
	number = {2},
	pages = {33-33},
	publisher = {ACM Press New York, NY, USA},
	volume = {20},
	year = {1988},
	biburl = {http://www.bibsonomy.org/bibtex/240bb8c7ee7bae7f79fccaa80e39c528c/bopep},
	keywords = {learnability mental model }
}