@inproceedings{ GÓMEZ_Fernández-:1-8,

author = { PEDRO GÓMEZ GUZMÁN and Felipe Fernández- } ,

title = { GRAPHICS CALCULATORS USE IN PRECALCULUS AND ACHIEVEMENT IN CALCULUS },

booktitle = { CONFERENCE OF THE INTERNATIONAL GROUP FOR THE PSYCHOLOGY OF MATHEMATICS EDUCA (21.1997.LATHI, FINLAND) },

year = { 1997 },

pages = { 1 - 8 },

location = { LATHI, FINLAND },

}