@article{10_1090_S0894_0347_03_00419_3,
     author = {McClure, James and Smith, Jeffrey},
     title = {Multivariable cochain operations and little {\dh}‘›-cubes},
     journal = {Journal of the American Mathematical Society},
     pages = {681--704},
     publisher = {mathdoc},
     volume = {16},
     number = {3},
     year = {2003},
     doi = {10.1090/S0894-0347-03-00419-3},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-03-00419-3/}
}