1. H. Brunn, 1889. B. Grünbaum, personal correspondence.
2. R. Cole, M. Sharir, and C. K. Yap. On k-hulls and related problems. SIAM Journal of Computing, 16(1):61–77, 1987.
3. J. S. Chang and C. K. Yap. A polynomial solution for the potato-peeling problem. Discrete & Computational Geometry, 1(2):155–182, 1986.
4. M. G. Díaz and J. O'Rourke. Algorithms for computing the center of area of a convex polygon. Technical Report 88-26, Johns Hopkins University, 1988.
5. M. G. Díaz and J. O'Rourke. Computing the center of area of a simple polygon. Technical Report 89-03, Johns Hopkins University, 1989.