@inproceedings{inproceedingsdd736964, title = {Difficulties in the implementation of the teaching-learning sequence on topics of nanoscience and nanotechnology in the initial training of physics teachers}, author = {Barros, Marcelo Alves and Silva, Marcelo de Assumpção Pereira da}, year = {2010}, publisher = {Université de Reims}, booktitle = {Groupe International de Recherche sur l'Enseignement de la Physique - GIREP} }