TY JOUR TI METHOD OF FORMATION OF OPTIMAL CHAIN COSTS OF METALLURGICAL ENTERPRISE IN THE CONCEPT OF ADDED VALUE KW the value chain KW supply chain KW costs KW cash flow KW optimization KW цепочка создания ценности JO Austrian Journal of Humanities and Social Sciences AU Butrin, A.. AU Gelmanova, Z.. AU Smailova, A.. PY 2017 IS 2017 PB Premier Publishing s.r.o.