Yuschenko, A.A.YuschenkoEvseyceva, O. S.O. S.EvseycevaHumenna, O. A.O. A.Humenna2013-06-132013-06-132013-06-13http://ir.nmu.org.ua/handle/123456789/2152enIMPROVING A SERVICEMYSTERY SHOPPING AS AN EFFECTIVE TOOL OF IMPROVING A SERVICEArticle