@conference {19820,
	title = {Investigating two trainee teacher educators{\textquoteright} transformations of the same resources in technology enhanced mathematics},
	booktitle = {Proceedings of the Ninth Congress of the European Society for Research in Mathematics Education (CERME 9)},
	year = {2015},
	pages = {3043-3050},
	address = {Charles University, Prague},
	author = {E Kalogeria and G Psycharis},
	editor = {K Krainer and N Vondrov{\'a}}
}
