Bonazzi, R., F. M. Cimmino, J.-L. Beuchat, and F. Vérolet. “Tracing Effects of Covid-19 Over Small and Medium Enterprises”. ENTRENOVA - ENTerprise REsearch InNOVAtion, vol. 6, no. 1, Sept. 2020, pp. 309-21, https://hrcak.srce.hr/ojs/index.php/entrenova/article/view/13476.