Neverauskienė, Laima Okunevičiūtė, and Arūnas Pocius. “Trends of Hidden Employment in Lithuania and Problems in Methodical Calculations”. Technological and Economic Development of Economy, vol. 17, no. 3, Oct. 2011, pp. 484-00, https://doi.org/10.3846/20294913.2011.603176.