Cite
On a Question of Erdős and Ulam.
MLA
Solymosi, Jozsef, and Frank de Zeeuw. “On a Question of Erdős and Ulam.” Discrete & Computational Geometry, vol. 43, no. 2, Feb. 2010, pp. 393–401. EBSCOhost, https://doi.org/10.1007/s00454-009-9179-x.
APA
Solymosi, J., & de Zeeuw, F. (2010). On a Question of Erdős and Ulam. Discrete & Computational Geometry, 43(2), 393–401. https://doi.org/10.1007/s00454-009-9179-x
Chicago
Solymosi, Jozsef, and Frank de Zeeuw. 2010. “On a Question of Erdős and Ulam.” Discrete & Computational Geometry 43 (2): 393–401. doi:10.1007/s00454-009-9179-x.