Hunady, Jan, Peter Pisar, and Ina Durcekova. “Business R&Amp;D Expenditure in the ICT Sector: Effects on Business Performance Indicators”. ENTRENOVA - ENTerprise REsearch InNOVAtion 5, no. 1 (October 31, 2019): 445–456. Accessed May 22, 2024. https://hrcak.srce.hr/ojs/index.php/entrenova/article/view/13816.