1. Vyrzhikovskaya M.F. Rentgenologicheskaya diagnostika zabolevanij dvenadtsatiperstnoj kishki. M.: Meditsina; 1963;201.(in Russian)
2. ZHandarov K.N., Kiselevskij G. V., Novitskij А.А. Chronic duodenal obstruction combined with gastric and duodenal ulcer. Voennaya meditsina. 2007;1:57-60.(in Russian)
3. Kasumyan S.А., Аlibegov R.А. Funktsional'nye i organicheskie narusheniya prokhodimosti DPK. Smolensk. 1997;136.(in Russian)
4. Martynov V.L., Izmajlov S.G. i dr. Diagnosis of chronic duodenal obstruction. KHirurgiya. 2005;4:20-23.(in Russian)
5. Mirzaev А.P. Duodenal'nyj staz. Leningrad: Meditsina 1976; 176.(in Russian)