BIBCYT http://bibcyt.ucla.edu.ve/cgi-win/be_alex.exe?Ultimo&Nombrebd=BIBCYT UCLA - Biblioteca de Ciencias y Tecnologia Felix Morales Bueno Heer, Jeffrey P Principal Viégas, Fernanda B P Principal Wattenberg, Martin P Principal Voyagers and Voyeurs: Supporting asynchronous collaborative visualization January 1, 2009 pp. 87-97