00548naa#a2200181#i#450# EN\\bibl\14475 20241006161010.7 1999-8775 20140331b2014####ek#y0engy0150####ca RUS RU Condensed algorithm structural and parametric optimization of end walls of freight cars. Journal article Bryansk Bryansk State Technical University 2014 7 с. Journal article local Beyn Dmitriy Bulychev Mikhail bstu.editorum.ru