no. 2

Measures which act almost invariantly
Compositio Mathematica, Tome 21 (1969) no. 2, pp. 113-121. 
@article{CM_1969__21_2_113_0,
     author = {Larsen, R.},
     title = {Measures which act almost invariantly},
     journal = {Compositio Mathematica},
     pages = {113--121},
     publisher = {Wolters-Noordhoff Publishing},
     volume = {21},
     number = {2},
     year = {1969},
     zbl = {0176.00803},
     mrnumber = {435727},
     language = {en},
     url = {http://www.numdam.org/item/CM_1969__21_2_113_0/}
}
Larsen, R. Measures which act almost invariantly. Compositio Mathematica, Tome 21 (1969) no. 2, pp. 113-121. http://www.numdam.org/item/CM_1969__21_2_113_0/

M. Jerison and W. Rudin [1] Translation invariant functionals, Proc. Amer. Math. Soc. 13 (1962), 417-423. | MR 146650 | Zbl 0106.31202

R. Larsen [2] A lmost invariant measures, Pac. J. Math. 15 (1965), 1295-1305. | MR 185079 | Zbl 0136.01903

A. Weil [3] L'Intégration dans les groupes topologiques et ses applications, Hermann and Cie, Paris, 1953. | JFM 66.1205.02 | Zbl 0063.08195