Sai, D.D.SaiNikolayeva, V. K.V. K.NikolayevaShvets, O. D.O. D.Shvets2013-06-162013-06-162011-12-8http://ir.nmu.org.ua/handle/123456789/2438enMETHODS OF IMPROVING EFFICIENCY OF SMS-MARKETING OR THE MORE YOU SEND THE MORE YOU SELLArticle