The analytic properties of scattering amplitudes in sixth-order perturbation theory
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1991 ◽
Vol 40
(S25)
◽
pp. 43-70
◽
2004 ◽
Vol 21
(7)
◽
pp. 1251
◽
2001 ◽
Vol 18
(3)
◽
pp. 547-553
◽
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