1. Bichteler, K.: An existence theorem for strong liftings (to appear).
2. Bourbaki, N.: Intégration. Paris: Herrmann 1952?1960.
3. Doob, J.: Stochastic processes. New York: Wiley 1953.
4. Ionescu-Tulcea, A. and Ionescu-Tulcea, C.: On the lifting property (I). J. Math. Anal. and Appl.3, 537?546 (1961).
5. Ionescu-Tulcea, A. and Ionescu-Tulcea C.: On the existence of a lifting commuting with the left translations of an arbitrary locally compact group. Proc. of Fifth Berkeley Symposium on Mathematical Statistics and Probability, Univ. of California Press (1966).