@conference {voelter2014projectional,
	title = {Towards User-Friendly Projectional Editors},
	booktitle = {7th International Conference on Software Language Engineering (SLE)},
	year = {2014},
	attachments = {http://gsd.uwaterloo.ca/sites/default/files/2014-sle-projectional.pdf},
	author = {Markus Voelter and Janet Siegmund and Thorsten Berger and Bernd Kolb}
}