Finbarr Holland, Michael Vowe. A Triangle Inequality from 1953: 11325 [2007, 836]. The American Mathematical Monthly, 116(7):653-654, 2009. [doi]
@article{HollandV09, title = {A Triangle Inequality from 1953: 11325 [2007, 836]}, author = {Finbarr Holland and Michael Vowe}, year = {2009}, url = {http://www.jstor.org/stable/40391187}, researchr = {https://researchr.org/publication/HollandV09}, cites = {0}, citedby = {0}, journal = {The American Mathematical Monthly}, volume = {116}, number = {7}, pages = {653-654}, }