Research and development activity in Poland following the accession to the European Union (in the years 2004-2017) - Adam Sadłowski; Paweł Stępkowski (Central and eastern european journal of management and economics, 2019)
10.29015/ceejme.823; 10.29015/ceejme.823; 2830238-2; 2353-9119; Central and eastern european journal of management and economics; 832586013