Editing Critical graph (section)

==References==
{{commons category}}
{{reflist|refs=

<ref name=brooks>{{citation|doi=10.1017/S030500410002168X|last1=Brooks|first1=R. L.|journal=Proceedings of the Cambridge Philosophical Society|pages=194–197|issue=2|title=On colouring the nodes of a network|volume=37|year=1941|bibcode=1941PCPS...37..194B |s2cid=209835194 }}</ref>

<ref name=dbe>{{citation|last1=de Bruijn|first1=N. G.|author1-link=Nicolaas Govert de Bruijn|last2=Erdős|first2=P.|author2-link=Paul Erdős|journal=Nederl. Akad. Wetensch. Proc. Ser. A|pages=371–373|title=A colour problem for infinite graphs and a problem in the theory of relations|volume=54|year=1951|doi=10.1016/S1385-7258(51)50053-7|url=https://research.tue.nl/nl/publications/a-colour-problem-for-infinite-graphs-and-a-problem-in-the-theory-of-relations(8bb2b225-bd1a-4924-97ee-0eefca35f01b).html|citeseerx=10.1.1.210.6623}}.  ([[Indagationes Mathematicae|''Indag. Math.'']] '''13'''.)</ref>

<ref name=dirac>{{citation|doi=10.1112/plms/s3-7.1.161|last=Dirac|first=G. A.|author-link=Gabriel Andrew Dirac|journal=Proceedings of the London Mathematical Society|pages=161–195|title=A theorem of R. L. Brooks and a conjecture of H. Hadwiger|issue=1|volume=7|year=1957}}</ref>

<ref name=erdos>{{citation|last=Erdős|first=Paul|author-link=Paul Erdős|contribution=Problem 2|page=361|publisher=Proc. Colloq., Tihany|title=In Theory of Graphs|year=1967}}</ref>

<ref name=gallai-1>{{citation|last=Gallai|first=T.|author-link=Tibor Gallai|journal=Publ. Math. Inst. Hungar. Acad. Sci.|pages=165–192|title=Kritische Graphen I|volume=8|year=1963|ref=none}}</ref>

<ref name=gallai-2>{{citation|last=Gallai|first=T.|author-link=Tibor Gallai|journal=Publ. Math. Inst. Hungar. Acad. Sci.|pages=373–395|title=Kritische Graphen II|volume=8|year=1963|ref=none}}</ref>

<ref name=hajos>{{citation|last=Hajós|first=G.|author-link=György Hajós|title=Über eine Konstruktion nicht {{mvar|n}}-färbbarer Graphen|journal=Wiss. Z. Martin-Luther-Univ. Halle-Wittenberg Math.-Natur. Reihe|volume=10|pages=116–117|year=1961}} <!-- Might be in: Bericht 1951-1966: Gesamtregister der Jahrgänge I-XV: Wissenschaftliche Zeitschrift der Martin-Luther-Universität Halle-Wittenberg. Germany: n.p., 1969. {{GBurl|aqxDAAAAMAAJ}} oclc 578119357 --></ref>

<ref name=lovasz>{{citation|last=Lovász|first=László|author-link=László Lovász|contribution=Solution to Exercise 9.21|publisher=North-Holland|title=Combinatorial Problems and Exercises |edition=2nd |year=1992 |isbn=978-0-8218-6947-5 }}</ref>

<ref name=stehlik>{{citation|last=Stehlík|first=Matěj|doi=10.1016/S0095-8956(03)00069-8|issue=2|journal=[[Journal of Combinatorial Theory]]|mr=2017723|pages=189–194|series=Series B|title=Critical graphs with connected complements|volume=89|year=2003|doi-access=}}</ref>

}}