@article{NUMA_1988__53_1-2_133278,
     author = {W. Wendland and K. Ruotsalainen},
     title = {On the {Boundary} {Element} {Method} for {Some} {Nonlinear} {Boundary} {Value} {Problems.}},
     journal = {Numerische Mathematik},
     pages = {299--314},
     publisher = {mathdoc},
     volume = {53},
     number = {1-2},
     year = {1988},
     zbl = {0651.65081},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1988__53_1-2_133278/}
}