@article {MATHEDUC.05993663,
author = {Levrie, Paul and Daems, Walter},
title = {Evaluating the probability integral using Wallis's product formula for $\pi $.},
year = {2009},
journal = {American Mathematical Monthly},
volume = {116},
number = {6},
issn = {0002-9890},
pages = {538-541},
publisher = {Mathematical Association of America (MAA), Washington, DC},
doi = {10.4169/193009709X470443},
abstract = {Summary: $\dots$ or how the square root of Wallis's product formula for $\pi $ is the probability integral in disguise. To prove this only basic one-variable calculus is used.},
msc2010 = {K65xx (I35xx)},
identifier = {2012b.00985},
}