Balvočiūtė, R., and D. Kazlauskas. “Analysis of Value Added and Entrepreneurship Changes Created by Production Enterprises in Lithuania, Šiauliai County and Šiauliai City in 2009–2019”. Applied Scientific Research, vol. 1, no. 1, June 2022, pp. 170-8, https://ojs.svako.lt/TMT/article/view/55.