@article {agmon,
    AUTHOR = {Agmon, S.},
     TITLE = {The relaxation method for linear inequalities},
   JOURNAL = {Canadian J. Math.},
  FJOURNAL = {Canadian Journal of Mathematics. Journal Canadien de
              Math\'ematiques},
    VOLUME = {6},
      YEAR = {1954},
     PAGES = {382--392},
      ISSN = {0008-414X},
   MRCLASS = {27.0X},
  MRNUMBER = {0062786 (16,18d)},
MRREVIEWER = {L. M. Blumenthal},
}

@article {motzkinschoenberg,
    AUTHOR = {Motzkin, T. S. and Schoenberg, I. J.},
     TITLE = {The relaxation method for linear inequalities},
   JOURNAL = {Canadian J. Math.},
  FJOURNAL = {Canadian Journal of Mathematics. Journal Canadien de
              Math\'ematiques},
    VOLUME = {6},
      YEAR = {1954},
     PAGES = {393--404},
      ISSN = {0008-414X},
   MRCLASS = {27.0X},
  MRNUMBER = {0062787 (16,18e)},
MRREVIEWER = {L. M. Blumenthal},
}