@article{Prokhorov_2004 author = {E. D. Prokhorov and O. V. Botsula}, title = {Impedance Characteristics of Diodes Operating Jointly and Having Negative Differential Conductivity}, journal = {Telecommunications and Radio Engineering}, issn = {0040-2508}, year = {2004}, volume = {61}, number = {2-6}, pages = {529--542} }