http://twin.sci-hub.se/6607/74f935079576886e116256e5869ec69b/wayner1992.pdf http://twin.sci-hub.se/6607/74f935079576886e116256e5869ec69b... Albeit primitive by

http://twin.sci-hub.se/6607/74f935079576886e116256e5869ec69b/wayner1992.pdf http://twin.sci-hub.se/6607/74f935079576886e116256e5869ec69b... Albeit primitive by today's standards, it impressed me at the time.