@misc{gavin_r_putland_2020_3659326, author = {Gavin R. Putland}, title = {{Exact derivation of Kirchhoff's integral theorem and diffraction formula using high-school math}}, month = feb, year = 2020, publisher = {Zenodo}, version = 1, doi = {10.5281/zenodo.3659326}, url = {https://doi.org/10.5281/zenodo.3659326} }