Tom M. Apostol, Mamikon A. Mnatsakanian. Solids Circumscribing Spheres. The American Mathematical Monthly, 113(6):521-540, 2006. [doi]
@article{ApostolM06,
title = {Solids Circumscribing Spheres},
author = {Tom M. Apostol and Mamikon A. Mnatsakanian},
year = {2006},
url = {http://www.jstor.org/stable/27641977},
researchr = {https://researchr.org/publication/ApostolM06},
cites = {0},
citedby = {0},
journal = {The American Mathematical Monthly},
volume = {113},
number = {6},
pages = {521-540},
}