Nat͡sionalʹnai͡a nauchno-tekhnicheskai͡a konferent͡sii͡a s mezhdunarodnym uchastiem "Roboty '79," Stara Zagora, Bulgaria 1979.

• Nat͡sionalʹnai͡a nauchno-tekhnicheskai͡a konferent͡sii͡a s mezhdunarodnym uchastiem "Roboty 79," 29-31 mai͡a 1979 goda, Dom tekhniki, g. St. Zagora