@article{Kulish_2010 author = {V. V. Kulish and A. V. Lysenko and V. V. Koval}, title = {CUBIC-NONLINEAR THEORY OF A PLASMA-BEAM SUPERHETERODYNE FREE ELECTRON LASER WITH H-UBITRON PUMPING}, journal = {Telecommunications and Radio Engineering}, issn = {0040-2508}, year = {2010}, volume = {69}, number = {20}, pages = {1859--1869} }