@article{M2AN_1985__19_1_65_0,
     author = {Rannacher, R. and Wendland, W. L.},
     title = {On the order of pointwise convergence of some boundary element methods. {Part} {I.} {Operators} of negative and zero order},
     journal = {ESAIM: Mod\'elisation math\'ematique et analyse num\'erique},
     pages = {65--87},
     publisher = {AFCET - Gauthier-Villars},
     address = {Paris},
     volume = {19},
     number = {1},
     year = {1985},
     mrnumber = {813689},
     zbl = {0579.65147},
     language = {en},
     url = {http://www.numdam.org/item/M2AN_1985__19_1_65_0/}
}