@inbook{ GÓMEZ:111-114,

author = { PEDRO GÓMEZ GUZMÁN } ,

title = { Negotiation of meaning in outside of the classroom group assignments: accounting for the how to understand the what of future mathematics teachers¿ learning },

booktitle = { La Matematica e la sua didattica, quarant¿anni di impegno. Mathematics and its didactics, forty years of commitment. In occasion of the 65 years of Bruno D¿Amore },

isbn = { 88-371-1855-4 },

pages = { 111 - 114 },

year = { 2011 },

}