Dessen, Joseph H.; A Differential Telephone Repeater Circuit [PDF]; Audio Research Products Co., Blackwood Terrace, NJ; Paper ; 1969 Available: https://aes2.org/publications/elibrary-page/?id=1551

@article{dessen1969a,
author={dessen joseph h.},
journal={journal of the audio engineering society},
title={a differential telephone repeater circuit},
year={1969},
volume={17},
issue={5},
pages={572, 576, 578},
month={october},}

TY – paper
TI – A Differential Telephone Repeater Circuit
SP – 572, 576, 578 EP –
AU – Dessen, Joseph H.
PY – 1969
JO – Journal of the Audio Engineering Society
VO – 17
IS – 5
Y1 – October 1969