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APA
Pedro J Freitas, (2015). Almada Negreiros and the regular nonagon. RECREATIONAL MATHEMATICS MAGAZINE, ISSN 2182-1976. eISSN .
IEEE
Pedro J Freitas, "Almada Negreiros and the regular nonagon" in RECREATIONAL MATHEMATICS MAGAZINE, 2015.
BIBTEX
@article{14695,
author = {Pedro J Freitas},
title = {Almada Negreiros and the regular nonagon},
journal = {RECREATIONAL MATHEMATICS MAGAZINE},
year = 2015,
}