A simple proof is given of the Thouvenot relative isomorphism theorem for conditional very weak Bernoulli processes. As a special case, one obtains a simple proof of the Ornstein isomorphism theorem for very weak Bernoulli processes.
"A Simple Development of the Thouvenot Relative Isomorphism Theory." Ann. Probab. 12 (1) 204 - 211, February, 1984. https://doi.org/10.1214/aop/1176993383