@article{10_1090_S0894_0347_00_00332_5,
     author = {Hopkins, Michael and Kuhn, Nicholas and Ravenel, Douglas},
     title = {Generalized group characters and complex oriented cohomology theories},
     journal = {Journal of the American Mathematical Society},
     pages = {553--594},
     publisher = {mathdoc},
     volume = {13},
     number = {3},
     year = {2000},
     doi = {10.1090/S0894-0347-00-00332-5},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-00-00332-5/}
}