@article {MR3632921,
    AUTHOR = {Feischl, Michael and Gantner, Gregor and Haberl, Alexander and
              Praetorius, Dirk},
     TITLE = {Optimal convergence for adaptive {IGA} boundary element
              methods for weakly-singular integral equations},
   JOURNAL = {Numer. Math.},
  FJOURNAL = {Numerische Mathematik},
    VOLUME = {136},
      YEAR = {2017},
    NUMBER = {1},
     PAGES = {147--182},
      ISSN = {0029-599X},
   MRCLASS = {65N38 (65D07 65N12 65N50 65Y20)},
  MRNUMBER = {3632921},
MRREVIEWER = {Paul Andrew Martin},
       DOI = {10.1007/s00211-016-0836-8},
       URL = {https://doi.org/10.1007/s00211-016-0836-8},
}