LOVÁSZ, László - PELIKÁN, József - VESZTERGOMBI, Katalin. Discrete mathematics : elementary and beyond. New York : Springer, [2003]. ©2003. 1 online zdroj (ix, 292 stran). Undergraduate texts in mathematics. Dostupné na internetu: <https://search.ebscohost.com/login.aspx?direct=true&db=nlebk&AN=99639&lang=cs&site=eds-live&ebv=EB&ppid=pp_Cover> ISBN 978-0-387-21777-2.