@Article{ CASTRO_RUIZ:7-20,

author = { ENCARNACION CASTRO MARTINEZ and FRANCISCO RUIZ FERRON } ,

title = { USING A MODEL TO DESCRIBE STUDENT¿S REASONING IN PROBLEM SOLVING },

journal = { REVISTA DE INVESTIGACIÓN PSICOEDUCATIVA },

year = { 2009 },

volume = { 7 },

issn = { 1699-5880 },

pages = { 7-20 },

}