Nyikos, Peter J. (2001). "A history of the normal Moore space problem". Handbook of the History of General Topology. History of Topology. Vol. 3. Dordrecht: Kluwer Academic Publishers. pp. 1179–1212. doi:10.1007/978-94-017-0470-0_7. ISBN0-7923-6970-X. MR1900271.
Solovay, R. M.; Tennenbaum, S. (1971). "Iterated Cohen extensions and Souslin's problem". Annals of Mathematics. Second Series. 94 (2): 201–245. doi:10.2307/1970860. JSTOR1970860.
Nyikos, Peter J. (2001). "A history of the normal Moore space problem". Handbook of the History of General Topology. History of Topology. Vol. 3. Dordrecht: Kluwer Academic Publishers. pp. 1179–1212. doi:10.1007/978-94-017-0470-0_7. ISBN0-7923-6970-X. MR1900271.
Solovay, R. M.; Tennenbaum, S. (1971). "Iterated Cohen extensions and Souslin's problem". Annals of Mathematics. Second Series. 94 (2): 201–245. doi:10.2307/1970860. JSTOR1970860.