%0 Journal Article %T Formation of stationary and transient spots on thermionic cathodes and its prevention %A Almeida, P G C %A Benilov, M S %A Cunha, M D %J Journal of Physics D: Applied Physics %V 41 %N 14 %P 9 %@ 0022-3727 %D 2008-07-21 %~ DeepDyve