@article{10_4064_sm_74_2_183_189,
     author = {D. Ramachandran and M. Misiurewicz},
     title = {Hopf's theorem on invariant measures for a group of transformations},
     journal = {Studia Mathematica},
     pages = {183--189},
     year = {1982},
     volume = {74},
     number = {2},
     doi = {10.4064/sm-74-2-183-189},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-74-2-183-189/}
}