Шупта, О.О. and Богомолов, М. 2010. Device for the increase of duration of radio signals. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia. 42 (May 2010), 107-111. DOI:https://doi.org/10.20535/RADAP.2010.42.107-111.