Tarando, E. ., T. . Malinina, O. . Nikiforova, V. . Sereda, and N. . Pruel. “Informally Self-Employed in Russia: Attitude to Formalization (On the Example of Saint Petersburg)”. International Journal of Criminology and Sociology, vol. 9, Apr. 2022, pp. 2217-23, doi:10.6000/1929-4409.2020.09.264.