@article{Apostol:1983:PEM,
author = {Apostol, Tom M.},
title = {A proof that {E}uler missed: Evaluating {$\RiemannZeta (2)$}
the easy way},
journal = {Math. Intelligencer},
fjournal = {The Mathematical Intelligencer},
volume = {5},
year = {1983},
number = {3},
pages = {59–60},
issn = {0343-6993},
coden = {MAINDC},
mrclass = {11M06},
mrnumber = {MR0737691 (86b:11054)},
mrreviewer = {P. Sz{\"u}sz},
zblno = {0538.10001}}