@ARTICLE{Wong+Ling-Optimethfundsolu:11,
  title        = {Optimality of the method of fundamental solutions},
  author       = {Wong, K. Y. and Ling, L.},
  journal      = {Eng. Anal. Bound. Elem.},
  fjournal     = {Engineering Analysis with Boundary Elements},
  volume       = {35},
  number       = {1},
  pages        = {42-46},
  year         = {2011},
  doi          = {DOI: 10.1016/j.enganabound.2010.06.002},
}