@article{MET_1990__37_3-4_176289,
     author = {M.L. Targhetta},
     title = {A {Note} on a {Mixing} {Problem} and the {Sch\"utzenberger} {Inequality.}},
     journal = {Metrika},
     pages = {155--161},
     publisher = {mathdoc},
     volume = {37},
     number = {3-4},
     year = {1990},
     zbl = {0708.62026},
     url = {http://geodesic.mathdoc.fr/item/MET_1990__37_3-4_176289/}
}