@article{wong:1974:md,
    author = {Wong, R. and Wyman, M.},
     title = {The method of {D}arboux},
   journal = {J. Approximation Theory},
    volume = {10},
      year = {1974},
    number = {2},
     pages = {159–171},
   mrclass = {30A10 (41A60)},
  mrnumber = {MR0357749 (50 \#10217)},
mrreviewer = {M. E. Noble},
       doi = {10.1016/0021-9045(74)90114-2},
     zblno = {0272.41016}}