00691naa#a2200181#i#4500001001500000005001700015011001400032100004100046102000700087200016100094210008500255215001000340608002700350675006600377700003000443700002200473856001400495EN\\bibl\2934020241108001554.5##a2071-7318##a20160625b2016####ek#y0engy0150####ca##aRU1#aAPPROBATION OF ECONOMIC AND MATHEMATICAL MODELS IN ACTIVITY  OF THE ENTERPRISES WITH THE HELP OF USING MICROSOFT EXCEL AND MATHCAD PROGRAMSeJournal article1#aBelgorodcBelgorod State Technological University named after V.G. Shukhovd2016##a7 с.##aJournal article2local##aЭкономика. Экономические науки. 33#1aChikinagElena Dmitrievna#1aShevchenkogM.V. 4#azh-szf.ru