SOPKOVÁ, Eva - KOSTIVIAROVÁ, Silvia. Evaluation of innovation activities of small and medium-sized businesses in Slovak Republic. In Perspectives of innovations, economics and business : international cross-industry journal. ISSN 1804-0519, 2009, vol. 3, issue 3, p. 18-19. Dostupné na internete: <http://academicpublishingplatforms.com/downloads/pdfs/pieb/volume3/201202040051_04_V3_SLOVAKIA_PIEB_EvaSopkova_Kostiviarova_AGR.pdf>