Vadim Ponomarenko. 100 Years Ago This Month in The American Mathematical Monthly. The American Mathematical Monthly, 128(7):647, 2021. [doi]
@article{Ponomarenko21g, title = {100 Years Ago This Month in The American Mathematical Monthly}, author = {Vadim Ponomarenko}, year = {2021}, doi = {10.1080/00029890.2021.1926191}, url = {https://doi.org/10.1080/00029890.2021.1926191}, researchr = {https://researchr.org/publication/Ponomarenko21g}, cites = {0}, citedby = {0}, journal = {The American Mathematical Monthly}, volume = {128}, number = {7}, pages = {647}, }