%0 conference lecture %@ %A Croci, G.,Claps, G.,Caniello, R.,Cazzaniga, C.,Grosso, G.,Murtas, F.,Tardocchi, M.,Vassallo, E.,gorini, G.,Horstmann, C.,Kampmann, R.,Nowak, G.,Stoermer, M. %D 2013 %J 13th Vienna Conference on Instrumentation, VCI 2013 %N %P %T GEM-based thermal neutron beam monitors for spallation sources %U %X