00515naa#a2200181#i#450# EN\\bibl\562 20241109213317.6 1992-5980 20130930b2013####ek#y0engy0150####ca RUS RU Contact stress distribution under circular plate on a soft layer Journal article rostov on don Don state technical University 2013 10 с. Journal article local Mitrin Boris Volkov Sergey zh-szf.ru