1. Pure and Applied Mathematics, Vol. 29;Blumenthal, R. M.,1968
2. Representation of invariant measures;Farrell, R. H.;Illinois J. Math.,1962
3. Van Nostrand Mathematical Studies, No. 21;Foguel, Shaul R.,1969
4. Remarks on conservative Markov processes;Foguel, S. R.;Israel J. Math.,1968