Massless Four-Loop Integrals and the Total Cross Section in e + e - Annihilation. - Johann H. Kühn; Peter Marquard; Matthias Steinhauser; M. Tentyukov (High Performance Computing in Science and Engineering, 2008)

Massive and Massless Four-Loop Integrals. - Johann H. Kühn; Peter Marquard; Matthias Steinhauser; M. Tentyukov (High Performance Computing in Science and Engineering, 2010)

Massive and Massless Four-Loop Integrals. - P. Baikov; K. Chetyrkin; Johann H. Kühn; Peter Marquard; Matthias Steinhauser (High Performance Computing in Science and Engineering, 2011)