@article{MZ_1994__216_4_174644,
     author = {G.I. Gaudry and T. Qian},
     title = {Homogeneous even kernels on surfaces.},
     journal = {Mathematische Zeitschrift},
     pages = {169--178},
     publisher = {mathdoc},
     volume = {216},
     number = {4},
     year = {1994},
     zbl = {0807.42014},
     url = {http://geodesic.mathdoc.fr/item/MZ_1994__216_4_174644/}
}