Serena Alvino Paola Forcheri Maria Grazia Ierardi Luigi Sarti The Pedagogical Dimension of Metadata for Learning Resources: The POEM Model. 58-67 2009 ICWL http://dx.doi.org/10.1007/978-3-642-03426-8_7 conf/icwl/2009 db/conf/icwl/icwl2009.html#AlvinoFIS09