00632naa#a2200193#i#450# EN\\bibl\68552 20241125100633.1 2218-130X 20190325b2019####ek#y0engy0150####ca RUS RU TORUS, CYLINDER AND CONE RESEARCH BY MEANS OF COMPUTER MODELLING AS FREQUENTE CASES OF DUPIN CYCLIDE Journal article Saint-Petersburg Saint-Petersburg University of State Fire Service of Emercom of Russia 2019 6 с. Journal article local Shiroukhov A V Tyshchenko I V Brykova L V journals.igps.ru