HAAS, A. I.; KOVAL, D. O.; HAAS, O. O. Regional anesthetics: traditions and innovations. Pain medicine, [S. l.], v. 3, n. 2, p. 39–52, 2018. DOI: 10.31636/pmjua.v3i2.100. Disponível em: https://painmedicine.org.ua/index.php/pnmdcn/article/view/100. Acesso em: 21 mar. 2026.