@ARTICLE{Ling+Schaback-Stabconvunsymesh:08,
  author       = {Ling, L. and Schaback, R.},
  title        = {Stable and convergent unsymmetric meshless collocation methods},
  journal      = {SIAM J. Numer. Anal.},
  fjournal     = {{SIAM} Journal on Numerical Analysis},
  volume       = {46},
  number       = {3},
  pages        = {1097-1115},
  year         = {2008},
}