“…The analysis in the Standard Model (SM) will deserve 2-loop accuracy; see [4] and many references therein. A promising model-independent alternative is the S-matrix approach [5,6,7,8], originally developed for the analysis of LEP data in 1991/1992 and first applied in 1992 by the L3 collaboration [9,10]. Later applications at LEP 1, Tristan and LEP 2 are described in [11,12,13,14,15,16].…”