@article{MS2_1977__40_166523,
     author = {Mitsuru Nakai and Leo Sario},
     title = {A nonexistence test for biharmonic {Green's} functions of clamped bodies.},
     journal = {Mathematica Scandinavica},
     pages = {151--160},
     publisher = {mathdoc},
     volume = {40},
     year = {1977},
     zbl = {0362.35011},
     url = {http://geodesic.mathdoc.fr/item/MS2_1977__40_166523/}
}