@MISC{TAXONOM1.MIZ,
  AUTHOR = {Giero, Mariusz and Matuszewski, Roman},
  TITLE = {Lower Tolerance. {P}reliminaries to {W}roclaw Taxonomy},
  NOTE = {This work has been partially supported by the European Community TYPES grant IST-1999-29001
and CALCULEMUS grant HPRN-CT-2000-00102.},
  ACKNOWLEDGEMENT = {The authors thank Prof. Andrzej Trybulec for his introduction
to this topic.
We thank Dr. Artur Kornilowicz for his advice on this article.
We also thank Robert Milewski and Adam Naumowicz for
their helpful comments.},
  SECTION1 = {Preliminaries},
  SECTION2 = {The Notion of Classification},
  SECTION3 = {The Tolerance on a Non Empty Set},
  SECTION4 = {The Partitions Defined by Lower Tolerance},
  SECTION5 = {The Classification on a Non Empty Set},
  SECTION6 = {The Classification on a Metric Space},
  DAY = {05},
  MONTH = {December},
  YEAR = {2000},
  ADDRESS1 = {University of Bia{\l}ystok},
  ADDRESS2 = {University of Bia{\l}ystok},
  SUMMARY = {The paper introduces some preliminary notions concerning the Wroclaw
taxonomy according to \cite{MatTry77}. The classifications and tolerances
are defined and considered w.r.t. sets and metric spaces. We prove theorems
showing various classifications based on tolerances.}}


@BOOK{MatTry77,
       AUTHOR = {Matuszewski Roman, Trybulec Andrzej},
        TITLE = {Certain algorithm of classification in metric spaces},
    PUBLISHER = {Warsaw University, Bialystok Campus},
         YEAR = {1977},
       VOLUME = {V},
       SERIES = {Mathematical Papers},
      ADDRESS = {Bialystok},
      EDITION = {Number 20}}
