@article{v005a007, author = {Fortnow, Lance}, title = {A Simple Proof of Toda's Theorem}, year = {2009}, pages = {135--140}, doi = {10.4086/toc.2009.v005a007}, publisher = {Theory of Computing}, journal = {Theory of Computing}, volume = {5}, number = {7}, URL = {https://theoryofcomputing.org/articles/v005a007}, }