Anninos, P., Bajuk, M., Seidel, E., Smarr, L., & Hobill, D. (1993). Visualizing black hole space-times. IEEE Computer Graphics and Applications, 13(1), 13-14.
Chapter 8 of the book Very large Scale Computation in the 21st Century, edited by Jill P. Mesirov for the Society for Industrial and Applied Mathematics (SIAM), (1991).