Managing Informal Learning in professional contexts: the learner’s perspective - A. Marques, Maria; C. Viegas, Maria; R. Alves, Gustavo; Zangrando, Valentina; Galanis, Nikolas; Janssen, Jose; Waszkiewicz, Elwira; Á. Conde, Miguel; J. Garcia-Peñalvo, Francisco (CEUR-WS, 2013)