00414naa#a2200157#i#450# EN\\bibl\17083 20260418083841.6 1609-3178 20170712b2017####ek#y0engy0150####ca RU Industrial Rigid Endoscopes Journal article Saint-Petersburg LLC SVEN 2017 4 с. Journal article local Dyakonov Sergey Yu. zh-szf.ru