Donald E. Knuth, Silvia Fernández, Gerry Myerson. A Modular Triple: 11021. The American Mathematical Monthly, 112(3):279-280, 2005. [doi]
@article{KnuthFM05, title = {A Modular Triple: 11021}, author = {Donald E. Knuth and Silvia Fernández and Gerry Myerson}, year = {2005}, url = {http://www.jstor.org/stable/30037459}, researchr = {https://researchr.org/publication/KnuthFM05}, cites = {0}, citedby = {0}, journal = {The American Mathematical Monthly}, volume = {112}, number = {3}, pages = {279-280}, }