Koll, O.

discounter price brand store category discount manufacturer consumer retailer share market marketing performance discount stores research win-win situation national-brand m +m planet win-win product journal assortment marnik g market share between-store price gap price level jan-benedict e.m situation science success steenkamp chain store brands study result mainstream retailers outer-case management label effect information growth competition variable germany planet demand number innovativeness dekimpe level report mainstream focus retailing category share strategy price gap table panel discount chains series marnik control variables benefit model channel mercadona grocery within-store price gap offering jan-benedict erasmu rsm erasmus university format consumer panel data european store checks nb performance strength