@book{ Solr-RepoUNACR2249, title = {Evolving from one’s depth to teaching and research expertise : chronicle of a specialization proposal}, author = {Álvarez Martínez, Gustavo}, publisher = {Heredia, C.R. : UNA, 2010.}, year = {2012}, url = {http://hdl.handle.net/11056/2249} }