Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
Alexander Soifer. The Hadwiger-Nelson Problem. In John Forbes Nash Jr., Michael Th. Rassias, editors, Open Problems in Mathematics. pages 439-457, Springer, 2016. [doi]
Abstract is missing.