@article{1077491241,
author = {Halmos, Paul R.},
title = {Invariants of certain stochastic transformations: The mathematical
theory of gambling systems},
journal = {Duke Math. J.},
volume = {5},
number = {1},
year = {1939},
pages = { 461-478},
language = {en},
url = {http://dml.mathdoc.fr/item/1077491241}
}
Halmos, Paul R. Invariants of certain stochastic transformations: The mathematical
theory of gambling systems. Duke Math. J., Tome 5 (1939) no. 1, pp. 461-478. http://gdmltest.u-ga.fr/item/1077491241/