\begin{thebibliography}{xx} \harvarditem{Asimov}{1985}{asimov85} Asimov, D. \harvardleft 1985\harvardright , `The grand tour: A tool for viewing multidimensional data', {\em SIAM Journal of Scientific and Statistical Computations} {\bf 6}(1),~128--143. \harvarditem[Cook et~al.]{Cook, Buja \harvardand\ Cabrera}{1994}{cbc93} Cook, D., Buja, A. \harvardand\ Cabrera, J. \harvardleft 1994\harvardright , `Projection pursuit indexes based on orthonormal function expansions', {\em Journal of Computational and Graphical Statistics} {\bf 2}(3),~225--250. \harvarditem{Diaconis \harvardand\ Freedman}{1984}{fd84} Diaconis, P. \harvardand\ Freedman, D. \harvardleft 1984\harvardright , `Asymtotics of graphical projection pursuit', {\em The Annals of Statistics} {\bf 12}(3),~793--815. \harvarditem{Friedman}{1987}{friedman87} Friedman, J. \harvardleft 1987\harvardright , `Exploratory projection pursuit', {\em Journal of the American Statistical Association} {\bf 82},~249--266. \harvarditem{Friedman \harvardand\ Tukey}{1974}{ft74} Friedman, J. \harvardand\ Tukey, J. \harvardleft 1974\harvardright , `A projection pursuit algorithm for exploratory data analysis', {\em IEEE Transactions on Computers C} {\bf 23},~881--889. \harvarditem[Gellert et~al.]{Gellert, K\"ustner, Hellwich \harvardand\ K\"astner}{1977}{veb} Gellert, W., K\"ustner, H., Hellwich, M. \harvardand\ K\"astner, H. \harvardleft 1977\harvardright , {\em Kleine Enzyklop\"adie Mathematik}, VEB Bibliographisches Institut Leipzig. \harvarditem{Hall}{1989}{hall89b} Hall, P. \harvardleft 1989\harvardright , `On polynomial-based projection indices for exploratory projection pursuit', {\em The Annals of Statistics} {\bf 17}(2),~589--605. \harvarditem{Huber}{1985}{huber85} Huber, P. \harvardleft 1985\harvardright , `Projection pursuit', {\em The Annals of Statistics} {\bf 13},~435--475. \harvarditem{Klinke}{1994}{klinke93} Klinke, S. \harvardleft 1994\harvardright , A fast implementation of kernel-based projection pursuit indices, Discussion paper 9404, Institute of statistics, Catholic university of Louvain. \harvarditem[Mardia et~al.]{Mardia, Kent \harvardand\ Bibby}{1979}{mbk79} Mardia, K., Kent, J. \harvardand\ Bibby, J. \harvardleft 1979\harvardright , {\em Multivariate Analysis}, Academic Press. \harvarditem{Polzehl \harvardand\ Klinke}{1994}{pk94} Polzehl, J. \harvardand\ Klinke, S. \harvardleft 1994\harvardright , Experiences with bivariate projection pursuit indices, Discussion paper 9416, Institute of Statistics, Catholic university of Louvain. \harvarditem{Scott}{1992}{scott92} Scott, D. \harvardleft 1992\harvardright , {\em Multivariate density estimation}, John Wiley \& Sons. \harvarditem[Swayne et~al.]{Swayne, Cook \harvardand\ Buja}{1991}{scb91} Swayne, D., Cook, D. \harvardand\ Buja, A. \harvardleft 1991\harvardright , Xgobi: interactive dynamic graphics in the x window system with a link to s, {\em in} `ASA Proceedings of the Section on Statistical Graphics', pp.~1--8. \harvarditem{Tukey \harvardand\ Tukey}{1990}{tt90} Tukey, J. \harvardand\ Tukey, P. \harvardleft 1990\harvardright , Strips displaying empirical distributions: {I.} {T}extured dot strips, Technical memorandum, Bellcore. \end{thebibliography}