@article{NUMA_1970__16_132050,
     author = {T. KIYONO and M. SHIMASAKI},
     title = {Boundary {Contraction} {Solution} of the {Neumann} and {Mixed} {Boundary} {Value} {Problems} of the {Laplace} {Equation.}},
     journal = {Numerische Mathematik},
     pages = {442--450},
     publisher = {mathdoc},
     volume = {16},
     year = {1970},
     zbl = {0198.21401},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1970__16_132050/}
}