Dragan Vukotic. The Isoperimetric Inequality and a Theorem of Hardy and Littlewood. The American Mathematical Monthly, 110(6):532-536, 2003. [doi]
@article{Vukotic03, title = {The Isoperimetric Inequality and a Theorem of Hardy and Littlewood}, author = {Dragan Vukotic}, year = {2003}, url = {http://www.jstor.org/stable/3647909}, researchr = {https://researchr.org/publication/Vukotic03}, cites = {0}, citedby = {0}, journal = {The American Mathematical Monthly}, volume = {110}, number = {6}, pages = {532-536}, }