DEVELOPMENT PROBLEMS OF TELEPHONE EXCHANGES Authors L. KOZMA PDF How to Cite KOZMA, L. “DEVELOPMENT PROBLEMS OF TELEPHONE EXCHANGES ”, Periodica Polytechnica Electrical Engineering, 5(3), pp. 197–214, 1961. More Citation Formats Periodica Polytechnica Numbered ACM ABNT Chicago Harvard IEEE Vancouver Download Citation Endnote/Zotero/Mendeley (RIS) BibTeX Issue Vol. 5 No. 3 (1961) Section Articles