A.GOKUL; N.ZAHIRA JAHAN. Secure mobile payment transaction scheme using optimistic fair exchange (OFE) protocols with TPA model. International journal of intellectual advancements and research in engineering computations, [S. l.], v. 7, n. 1, p. 762–768, 2019. DOI: 10.61096/ijiarec.v7.iss1.2019.762-768. Disponível em: https://ijiarec.com/ijiarec/article/view/1004. Acesso em: 21 apr. 2026.