WOLAK-TUZIMEK, Anna - DUDA, Joanna. Innovation As a Factor of Competitiveness of Small and Medium-Sized Enterprises. In AD ALTA : journal of interdisciplinary research. - Hradec Králové : MAGNANIMITAS, 2014. ISSN 2464-6733, 2014, vol. 4, no. 2, pp. 42-46.