Polovnikov, I.I.PolovnikovDemidenko, M.M.DemidenkoIsakova, M.M.Isakova2013-12-312013-12-312013-12-12http://ir.nmu.org.ua/handle/123456789/3319enSPAMSPAM. WHY IS THERE NO SENSE IN SUCH A THING?Article