1. G. J. E. Rawlins and D. Wood, “Ortho-convexity and its generalizations,” in:Computational Morphology (G. T. Toussaint, editor), North-Holland, Amsterdam (1988). pp. 137–152.
2. G. J. E. Rawlins and D. Wood, “A decomposition theorem for convexity spaces,”J. Geom.,36, 143–157 (1989).
3. D. Wood, “An isothetic view of computational geometry,” in:Computational Geometry (G. T. Toussaint, editor), North-Holland, Amsterdam (1985), pp. 429–459.
4. S. Schuierer and D. Wood,Restricted Orientation Visibility, Report 40, Univ. Freiburg (1991).
5. N. N. Metelskii and V. S. Krikun,Isothetic hulls of bounded rank, type and genus [in Russian], Institute of Mathematics, Belorussian Academy of Sciences, Preprint No. 10(410), Minsk (1990).