\begin{thebibliography}{10}
 \thispagestyle{myheadings}


\bibitem{K395}
C. Barefoot, K. Casey, D. Fisher, K. Fraughnaugh, and F. Harary.
\newblock Size in maximal triangle-free graphs and minimal graphs of diameter 2.
\newblock {\em Discrete Mathematics}, 138:93--99, 1995.


\bibitem{CL05}
G. Chartrand and L. Lesniak.
\newblock {\em Graphs and Diagraphs}.
\newblock Chapman \& Hall/CRC, Boca Raton, FL, fourth edition, 2005.


\bibitem{CFG8}
G. Chen, J. Faudree, and R. Gould.
\newblock Saturation Number of Books.
\newblock {\em The Electronic Journal of Combinatorics}, 15, 2008.


\bibitem{dh86}
D. A. Duffus and D. Hanson.
\newblock Minimal $k$-Saturated and Color Critical Graphs of Prescribed Minimum Degree.
\newblock {\em Journal of Graph Theory}, 10:55--67, 1986.


\bibitem{EHM64}
P. Erd\H{o}s, A. Hajnal, and J. W. Moon.
\newblock A Problem in Graph Theory.
\newblock {\em Amer. Math. Monthly}, 71:1107--1110, 1964.


\bibitem{ht91}
D. Hanson and B. Toft.
\newblock $k$-saturated Graphs of Chromatic Number at least $k$.
\newblock {\em Ars Combinatoria}, 31:159--164, 1991.


\bibitem{KT86}
L. K\'{a}szonyi and Zs. Tuza.
\newblock Saturated graphs with minimal number of edges.
\newblock {\em Journal of Graph Theory}, 10:203--210, 1986.


\bibitem{M1907}
W. Mantel.
\newblock Problem 28.
\newblock {\em Wiskundige Opgaven}, 10:60--61, 1907.


\bibitem{T41}
P. Tur\'an.
\newblock On an Extremal Problem in Graph Theory.
\newblock {\em Mat. Fiz. Lapok}, 48:436--452, 1941.




%@article {K395,
%    AUTHOR = {C. Barefoot, K. Casey, D. Fisher, K. Fraughnaugh, and F. Harary},
%     TITLE = {Size in maximal triangle-free graphs and minimal graphs of diameter 2},
%   JOURNAL = {Discrete Mathematics},
%    VOLUME = {138},
%      YEAR = {1995},
%     PAGES = {93--99},
%}


%@book {CL05,
%    AUTHOR = {G. Chartrand and L. Lesniak},
%     TITLE = {Graphs and Diagraphs},
% PUBLISHER = {Chapman \& Hall/CRC, Boca Raton, FL},
%   EDITION = {4},
%      YEAR = {2005},
%}

%@article {CFG8,
%    AUTHOR = {G. Chen, J. Faudree, and R. Gould},
%     TITLE = {Saturation Number of Books},
%   JOURNAL = {The Electronic Journal of Combinatorics},
%    VOLUME = {15},
%      YEAR = {2008},
%}

%@article {dh86,
%    AUTHOR = {D. A. Duffus and D. Hanson},
%     TITLE = {Minimal $k$-Saturated and Color Critical Graphs of Prescribed Minimum Degree},
%   JOURNAL = {Journal of Graph Theory},
%    VOLUME = {10},
%      YEAR = {1986},
%     PAGES = {55--67},
%}

%@article {EHM64,
%    AUTHOR = {P. Erd\H{o}s, A. Hajnal, and J. W. Moon},
%     TITLE = {A Problem in Graph Theory},
%   JOURNAL = {Amer. Math. Monthly},
%    VOLUME = {71},
%      YEAR = {1964},
%     PAGES = {1107--1110},
%}

%@article {ht91,
%    AUTHOR = {D. Hanson and B. Toft},
%     TITLE = {$k$-saturated Graphs of Chromatic Number at least $k$},
%   JOURNAL = {Ars Combinatoria},
%    VOLUME = {31},
%      YEAR = {1991},
%     PAGES = {159--164},
%}

%@article {KT86,
%    AUTHOR = {L. K\'{a}szonyi and Zs. Tuza},
%     TITLE = {Saturated graphs with minimal number of edges},
%   JOURNAL = {Journal of Graph Theory},
%    VOLUME = {10},
%      YEAR = {1986},
%     PAGES = {203--210},
%}

%@article {M1907,
%    AUTHOR = {W. Mantel},
%     TITLE = {Problem 28},
%   JOURNAL = {Wiskundige Opgaven},
%    VOLUME = {10},
%      YEAR = {1907},
%     PAGES = {60--61},
%}

%@article {T41,
%    AUTHOR = {P. Tur\'an},
%     TITLE = {On an Extremal Problem in Graph Theory},
%   JOURNAL = {Mat. Fiz. Lapok},
%    VOLUME = {48},
%      YEAR = {1941},
%     PAGES = {436--452},
%}

\end{thebibliography}

