N. J. Wildberger. A New Proof of Cavalieri's Quadrature Formula. The American Mathematical Monthly, 109(9):843-845, 2002. [doi]
@article{Wildberger02, title = {A New Proof of Cavalieri's Quadrature Formula}, author = {N. J. Wildberger}, year = {2002}, url = {http://www.jstor.org/stable/3072373}, researchr = {https://researchr.org/publication/Wildberger02}, cites = {0}, citedby = {0}, journal = {The American Mathematical Monthly}, volume = {109}, number = {9}, pages = {843-845}, }