Treves, A. (Milan Univ. Italy)
Chiappetti, L. (Milano, Universita Milan, Italy)
Tanzi, E. G. (CNR Laboratorio di Fisica Cosmica e Technologie Relative, Milan, Italy)
Tarenghi, M. (European Southern Observatory Geneva, Switzerland)
Gursky, H. (Milan Univ. Italy)
Dupree, A. K. (Milan Univ. Italy)
Hartmann, L. W. (Milan Univ. Italy)
Raymond, J. (Milan Univ. Italy)
Davis, R. J. (Milan Univ. Italy)
Black, J. (Harvard-Smithsonian Center for Astrophysics Cambridge, Mass., United States)