New method for calculating helicity amplitudes of jet-like QED processes for high-energy colliders - II. Processes with lepton pair productionC. Carimalo, A. Schiller and V. G. SerboEur. Phys. J. C, 29 3 (2003) 341-351DOI: https://doi.org/10.1140/epjc/s2003-01244