@Article{1936,
     author = "Małgorzata Stefania Lewandowska, Tomasz Gołębiowski",
     title = "Synergy in product and marketing innovations of Polish exporters - research outcomes ",
     year =  2012,
     volume =  33,
     number =  ,
     journal =  International Journal of Management and Economics,
     pages =  s. 237-265,
    }