1. Freivalds, R. (1975). On complexity and optimality of computation in the limit. Theory of Algorithms and Programs, Vol. 233, pp. 155–173 (in Russian).
2. LNCS;R Freivalds,1996
3. Freivalds, R., Karpinski, M., & Smith, C. H. (1994a). Co-learning of total recursive functions. Proceedings of the Seventh Annual ACM Conference on Computational Learning Theory (COLT 1994), ACM, New Brunswick, pp. 190–197.
4. LNCS;R Freivalds,1994
5. Freivalds, R., Karpinski, M., Smith, C. H., & Wiehagen, R. (2002). Learning by the process of elimination. Information and Computation, 176(1), 37–50.