Economical Design of Lonb-distance Communication Lines by Non-loaded Cable Circuits
長距離通信網としての無裝荷ケーブルと裝荷ケーブルとの經濟比較

S. MATSUMAE, N. SHINOHARA
1933 The Journal of the Institute of Electrical Engineers of Japan  
doi:10.11526/ieejjournal1888.53.544_978 fatcat:7422ygh5tzeibiuh3tmghmc5yi