@misc{Patil_Vinayak_L._Historical,
 author={Patil, Vinayak L.},
 howpublished={online},
 publisher={National Institute of Telecommunications},
 language={ang},
 title={Historical Perspectives of Development of Antique Analog Telephone Systems, Journal of Telecommunications and Information Technology, 2015, nr 3},
 type={artykuł},
 keywords={cross-bar switches, voice communication, strowger switches, antique telephones, PSTN, voice band communication, common battery systems},
}