1. E. Vanes, Plenary Talk at ICHEP 08, Philadelphia, USA, Jul. 29th–Aug. 5th, 2008
2. ATLAS-TDR-015 (1999)
3. CMS-TDR-008-2, 2006,
http://cmsdoc.cern.ch/cms/cpt/tdr/
4. G.T. Bodwin, E. Braaten, G.P. Lepage, Phys. Rev. D 51, 1125 (1995).
hep-ph/9407339
5. G.T. Bodwin, E. Braaten, G.P. Lepage, Phys. Rev. D 55, 5853 (1997)