Walter R. HolmanCharles R. MargenthalerHarold D. Fletcher2026-03-222026-03-22198410.1111/j.1540-6288.1984.tb00585.xhttps://doi.org/10.1111/j.1540-6288.1984.tb00585.xhttps://andeanlibrary.org/handle/123456789/62309enCitationProduct (mathematics)Computer scienceManagementLibrary scienceINVESTOR RESPONSE TO NEW PRODUCT ANNOUNCEMENTS BY COMPUTER FIRMS: AN APT APPROACHarticle