@article{10_1090_S0894_0347_06_00523_6,
     author = {Galatius, Soren and Madsen, Ib and Tillmann, Ulrike},
     title = {Divisibility of the stable {Miller-Morita-Mumford} classes},
     journal = {Journal of the American Mathematical Society},
     pages = {759--779},
     publisher = {mathdoc},
     volume = {19},
     number = {4},
     year = {2006},
     doi = {10.1090/S0894-0347-06-00523-6},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-06-00523-6/}
}