[MathOuvrage]
Connections in discrete mathematics
/ Ed. Butler, Steve ; Ed. Cooper, Joshua ; Hurlbert, Glenn.
-Cambridge : Cambridge university Press, 2018. - xii, 352 p. ; 23 cm
ISBN 9781316607886
[MathOuvrage]
Rudiments of Ramsey theory
/ Graham, Ronald L. ; Butler, Steve.
-Providence RI : American mathematical Society, 2015. - ix, 82 p. ; 26 cm
ISBN 9780821841563