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Paul Gauduchon, Andrei Moroianu : Killing 2-forms in dimension 4 http://t.co/re0dpAaUQs
Paul Gauduchon, Andrei Moroianu : Killing 2-forms in dimension 4 http://t.co/re0dpAaUQs
Killing 2-forms in dimension 4. http://t.co/xt8BlRGidz
Killing 2-forms in dimension 4. http://t.co/xt8BlRGidz