Birmingham, Danny and Sachs, I. and Sen, Siddhartha (1997) Three-Dimensional Black Holes and String Theory. (Preprint)
Flume, R. and O'Raifeartaigh, L. and Sachs, I. (1996) Brief Resume of Seiberg-Witten Theory. (Preprint)
Ford, C. and O'Raifeartaigh, L. and Sachs, I. and Wiesendanger, C. (1995) Quantization of Interacting WZW Systems. (Preprint)