@article{Russell:1909:ERI,
author = {Russell, A.},
title = {The effective resistance and inductance of a concentric
main, and methods of computing the $\mathrm{ber}$ and $\mathrm{bei}$
and allied functions},
journal = {Philos. Mag. (6)},
volume = {17},
year = {1909},
pages = {524–552},
doi = {10.1088/1478-7814/21/1/339},
zblno = {40.0951.02}}