@MISC{O_RING_2.MIZ,
  AUTHOR = {Muzalewski, Micha{\l} and Szczerba, Les{\l}aw W.},
  TITLE = {Ordered Rings - Part {II}},
  DAY = {11},
  MONTH = {October},
  YEAR = {1990},
  ADDRESS1 = {Warsaw University\\Bia{\l}ystok},
  ADDRESS2 = {Siedlce University},
  SUMMARY = {     This series of papers is devoted to the notion of the ordered ring,
 and one of its most important cases: the notion of ordered field. It
 follows the results of \cite{SZMIELEW:1}. The idea of the notion of
 order in the ring is based on that of
 positive cone i.e. the set of positive elements. Positive cone has to
 contain at least squares of all elements, and has to be closed under sum
 and product. Therefore the key notions of this theory are that of square,
 sum of squares, product of squares, etc. and finally elements generated
 from squares by means of sums and products. Part II contains
 classification of sums of such elements.}}

