Article PDF
Rights and permissions
About this article
Cite this article
The Mathematical Association. Nature 195, 234–235 (1962). https://doi.org/10.1038/195234a0
Issue Date:
DOI: https://doi.org/10.1038/195234a0
Nature volume 195, pages 234–235 (1962)
The Mathematical Association. Nature 195, 234–235 (1962). https://doi.org/10.1038/195234a0
Issue Date:
DOI: https://doi.org/10.1038/195234a0