Title:La expansión residencial en áreas periurbanas del partido de La Plata : Las modalidades expansivas formal cerrada e informal abierta / Residential expansion in peri-urban areas of La Plata. Formal-closed and informal-open expansion modalities
Title:Before and after Twitter: Personal Learning Environments (e-conference on the use of PLE / PLN in English Language Teaching presented at
IATEFL Harrogate 2010)