2 papers
hep-ph1998
Spectral representation for on-shell massless double box
N. I. Ussyukina
A method is presented for obtaining the -expansion for on-shell massless scalar double-box diagram.
hep-ph1993
Some Exact Results for Two-Loop Diagrams with Three and Four External Lines
N. I. Ussyukina, A. I. Davydychev
Evaluation of three- and four-point diagrams with massless internal particles and arbitrary external momenta is considered. Exact results for some two-loop diagrams (planar and non…