**On the Existence of a Projective Plane of Order 10**, F. J. MacWilliams, N. J. A. Sloane and J. G. Thompson,*J. Combinatorial Theory, Series A*, 14 (1973), pp. 66-78.**The Orchard Problem**, S. A. Burr, B. Gru\*:nbaum and N. J. A. Sloane,*Geometriae Dedicata*, 2 (1974), pp. 397-424.**Voronoi Regions of Lattices, Second Moments of Polytopes, and Quantization**, J. H. Conway and N. J. A. Sloane,*IEEE Trans. Information Theory*, IT-28 (1982), pp. 211-226, A revised version appears as Chapter 21 of**Sphere Packings, Lattices and Groups (Second Edition)**, Springer-Verlag, NY, 1993. Reprinted in ``Vector Quantization'', H. Abut, Ed., IEEE Press, NY, 1990, pp. 118-133.**Four Icosahedra Can Meet at a Point**, [note: Fig. 1 , Fig. 2 , Fig. 3 are in separate files] H. Rossat and N. J. A. Sloane,*Geometriae Dedicata*, 27 (1988), pp. 219-222.**The Cell Structures of Certain Lattices**, J. H. Conway and N. J. A. Sloane,*Miscellanea mathematica*, P. Hilton, F. Hirzebruch and R. Remmert (editors), Springer-Verlag, NY, 1991, pp. 71-107, Also DIMACS Technical Report 91-5, February 1991.**Expressing (a**, R. H. Hardin and N. J. A. Sloane,^{2}+ b^{2}+ c^{2}+ d^{2})^{2}as a Sum of 23 Sixth Powers*Journal of Combinatorial Theory, Series A*, 68 (1994), pp. 481-485, Also DIMACS Technical Report 93-54, August 1993.**McLaren's Improved Snub Cube and Other New Spherical Designs in Three Dimensions**[postscript, pdf], [note: Fig. 1a and Fig. 1b are in separate files] R. H. Hardin and N. J. A. Sloane,*Discrete and Computational Geometry*, 15 (1996), pp. 429-441.