A. Collab and D. Decamp, ALEPH: a detector for electron-positron annihilations at LEP, submitted to Nucl, Instrum. Methods

V. Barger, Fourth-generation quarks and leptons, Physical Review D, vol.30, issue.5, p.947, 1984.
DOI : 10.1103/PhysRevD.30.947

S. Jadach and J. H. Kiihn, TIPTOP, a Monte Carlo for heavy fermion production and decay, preprint MPI PAE Pth, pp.86-64, 1986.