LITVINENKO, I.L.; PINKOVETSKAYA, Ju.S.; KOROLKOV, V.E.; PROTAS, V.F.; SOLOVYH, N.N.; TERSKAYA, G.A. Differentiation of small and medium enterprises based on headcount. Revista Publicando, "Quito, EC", v. 5, n. 16 (2), p. 290–303, 2018. Disponível em: https://revistapublicando.org/revista/index.php/crv/article/view/1666. Acesso em: 22 jan. 2025.