Slavchev, V., Kovachev, L. Phase modulated pulses into a nonlinear regime of propagation. Пловдив: 2013 58-61,.
Slavchev, V., Kovachev, L. Phase modulated pulses into a nonlinear regime of propagation. Пловдив: 2013 58-61,.
Slavchev, V., Kovachev, L. (2013) Phase modulated pulses into a nonlinear regime of propagation, Пловдив: 58-61,.
Slavchev, V., & Kovachev, L. (2013). Phase modulated pulses into a nonlinear regime of propagation. Научни трудове на Съюза на учените - Пловдив. Серия Г. Медицина, фармация и дентална медицина (с. 58-61). Пловдив: 14.
Slavchev V, Kovachev L. Phase modulated pulses into a nonlinear regime of propagation. Пловдив: 2013. p. 58-61.