Torrelles, Jose M. (Andalucia, Inst. de Astrofisica, Granada, Spain; Harvard-Smithsonian Center for Astrophysics, Cambridge MA, United States)
Verdes-Montenegro, Lourdes (Andalucia Inst. de Astrofisica, Granada, Spain)
Ho, Paul T. P. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Rodriguez, Luis F. (NASA Headquarters Washington, DC United States)
Canto, Jorge (Univ. Nacional Autonoma de Mexico Coyoacan, United States)