@article{10_1090_S0894_0347_1995_1273412_0,
     author = {Carbery, Anthony and Wainger, Stephen and Wright, James},
     title = {Hilbert transforms and maximal functions associated to flat curves on the {Heisenberg} group},
     journal = {Journal of the American Mathematical Society},
     pages = {141--179},
     publisher = {mathdoc},
     volume = {08},
     number = {1},
     year = {1995},
     doi = {10.1090/S0894-0347-1995-1273412-0},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1995-1273412-0/}
}