1. Asimov, D. (1985). The grand tour: A tool for viewing multidimensional data. SIAM Journal on Scientific and Statistical Computing, Vol.6, 128–143.
2. Becker, R.A., Chambers, J.M. & Wilks, A.R. (1988). The new S language:A programming environment for data analysis and graphics. Wadsworth, CA.
3. Becker, R.A., Cleveland, W.S. & Weil, G. (1988). The use of brushing and rotation for data analysis. In: Cleveland W.S. & McGill M.E. (eds.) Dynamic Graphics for Statistics. Wadsworth, CA, 247–275.
4. Betz, D.M. (1988). XLISP: An object-oriented Lisp, Version 2.0. Reference Manual.
5. Bolorforoush, M. & Wegman, E.J. (1988). On some graphical representations of multivariate data. Interface’ 88: Proceedings of the 20th Symposium on the Interface, 121–126.