Williams, George2007Williams, G 2007, 'Cost comparison of network, low-cost and charter airlines', Revista Lusófona de Ciências Aeronáuticas.Revista Lusófona de Ciências Aeronáuticasapplication/pdfengopenAccessTRANSPORTES AÉREOSCOMPANHIAS AÉREASINDÚSTRIA AÉREAVOOS CHARTERTARIFAS LOW COSTAIR TRANSPORTAIRLINE INDUSTRYCHARTER FLIGHTSLOW COST FARECost comparison of network, low-cost and charter airlinesarticle