PERKOWSKI, Bartosz. Electronic id as an element of informatisation of health care. Studia Oeconomica Posnaniensia, Poznan, Polska, v. 1, n. 2, p. s. 133–151, 2013. DOI: 10.18559/2g2y0114. Disponível em: https://journals.ue.poznan.pl/soep/article/view/3184. Acesso em: 3 sep. 2026.