@MISC{NECKLACE.MIZ,
  AUTHOR = {Retel, Krzysztof},
  TITLE = {The Class of Series -- Parallel Graphs. {P}art {I}},
  SECTION1 = {Preliminaries},
  SECTION2 = {Auxiliary Concepts},
  SECTION3 = {Necklace $n$},
  DAY = {18},
  MONTH = {November},
  YEAR = {2002},
  ADDRESS1 = {University of Bia{\l}ystok},
  SUMMARY = {The paper introduces some preliminary notions
concerning the graph theory according to \cite{Thomasse}.
We define Necklace $n$ as a graph with vertex $\{1,2,3,\dots,n\}$
and edge set $\{(1,2),(2,3),\dots,(n-1,n)\}.$
The goal of the article is to prove that Necklace $n$ and Complement
of Necklace $n$ are isomorphic for $n = 0, 1, 4.$ }}

