@Article{ GONZALEZ_RICO_GALLARDO:309-340,

author = { J.L. GONZALEZ and LUIS RICO ROMERO and J. A. GALLARDO } ,

title = { STRUCTURAL AND SEMIOTIC DIVERSITY IN THE TRANSITION FROM THE NATURAL-NUMBER DOMAIN TO THE INTEGRES: A STUDY OF THE UNDERSTANDING IN THE FIELD ADDITIVE RELATIVITY },

journal = { ELECTRONIC JOURNAL OF RESEARCH IN EDUCATIONAL PSYCHOLOGY },

year = { 2009 },

pages = { 309-340 },

}