@article{702322,
     title = {On boundary element methods for solving elliptic boundary value problems},
     booktitle = {Equadiff 5},
     series = {GDML\_Books},
     publisher = {BSB B.G. Teubner Verlagsgesellschaft},
     address = {Leipzig},
     year = {1982},
     pages = {360-365},
     zbl = {0561.65084},
     url = {http://dml.mathdoc.fr/item/702322}
}

Wendland, Wolfgang L. On boundary element methods for solving elliptic boundary value problems, dans Equadiff 5, GDML_Books,  (1982), pp. 360-365. http://gdmltest.u-ga.fr/item/702322/