by Reggiani, N., Guzzo, M.M., Colonia, J.H., de Holanda, P.C.
Published in The European physical journal. C, Particles and fields (01.01.2000)

by Colonia, J.H., Guzzo, M.M., Reggiani, N.
Published in Astroparticle physics (01.12.1997)

by Reggiani, N., Guzzo, M.M., Colonia, J.H., Holanda, P.C.
Published in Brazilian journal of physics (2000)