Caldas, A. , Sónia Silva. (2013). How can the early acquisition of Sign Language and Oral Language influence the syntactic performance of the oral language? A preliminary study in Portuguese Sign Language with prelingually deaf subjects. 3rd International Conference on Sign Linguistics and Deaf Education in Asia

Caldas, A. , Sónia Silva. (2012). The influence of Portuguese sign language in Portuguese performance. Fifth International Conference on Language, Culture and Mind, Lisboa, Portugal, 27/06/12

Caldas, A., Nunes, M. , Alexandre Castro Caldas. (2009). A emoção. Expressões da analogia

Caldas, A., Nunes, M., , P. , Alexandre Castro Caldas. (2009). PRO_LGP: an e-learning Project.