1. L. V. Kantorovich, B. Z. Vulikh, and A. G. Pinsker, Functional Analysis in Partially Ordered Spaces [in Russian], GITTL, Moscow (1950).
2. A. M. Vershik, ?A measurable realization of continuous groups of automorphisms of a unitary ring,? Izv. Akad. Nauk SSSR, Ser. Mat.,29, No. 1, 127?136 (1965).
3. G. W. Mackey, ?Point realizations of transformation groups,? J. Math.,6, No. 2, 327?335 (1962).
4. G. Maruyama, ?Transformations of flows,? J. Math. Soc. Jpn.,18, No. 3, 303?330 (1966).
5. A. Ramsay, ?Topologies on measured groupoids,? J. Funct. Anal.,47, No. 3, 314?342 (1982).