no. 2
Maps into nerves of closed coverings
Annali della Scuola Normale Superiore di Pisa - Scienze Fisiche e Matematiche, Série 3, Tome 21 (1967) no. 2, pp. 121-136. 
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Dugundji, J. Maps into nerves of closed coverings. Annali della Scuola Normale Superiore di Pisa - Scienze Fisiche e Matematiche, Série 3, Tome 21 (1967) no. 2, pp. 121-136. http://archive.numdam.org/item/ASNSP_1967_3_21_2_121_0/

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