1. for reviews see e.g J. Ellis, Proc. 1985 Int. Symp. on Lepton and Photon Int.’s at High Energies, Kyoto/Japan; D.V. Nanopoulos, Rivista del Nuovo Cimento 8 (1985) 1.
2. for reviews see e.g. W. Buchmüller, Schladming Lectures 1985, Acta Physica Austriaca, Suppl. XXVII (1985) 517; F. Schrempp, MPI-Munich Report MPI-PAE/PTh 32/86, 1986 (‘Habilitationsschrift’).
3. E. Eichten, K. Lane and M.E. Peskin, Phys. Rev. Lett. 50 (1983) 811.
4. E. Eichten, I. Hinchliffe, K. Lane and C. Quigg, Rev. Mod. Phys. 56 (1984) 579; erratum, Fermilab-Pub-86–75 (1986).
5. E. Eichten, Fermilab-Conf-85/178-T (1986).